Added installation instructions.

Added a patch which modifies idlefork so that it can co-exist with
"official" IDLE in the site-packages directory. This patch is not
necessary if only idlefork IDLE is installed. See INSTALLATION for further
details.

Lib/idlelib/INSTALLATION

+IDLE Fork Installation on Linux:
+
+Until the tarball is released, you must download a CVS copy.  An excellent
+place for it is
+
+/usr/local/src/PythonX.X/Tools/idlefork, assuming that's where your Python
+source is located. Put the correct version in for X.X .
+
+# cd /usr/local/src/PythonX.X/Tools
+
+Now do the CVS login and checkout:
+
+# cvs -d:pserver:anonymous@cvs.idlefork.sourceforge.net:/cvsroot/idlefork login
+
+Type an <enter> for the password.
+
+# cvs -z3 -d:pserver:anonymous@cvs.idlefork.sourceforge.net:/cvsroot/idlefork \
+      -d idlefork checkout idle
+
+The -d option to checkout puts the files in an idlefork directory, so you don't
+step on "official" idle.
+
+# cd idlefork
+# su      to root
+
+# python setup.py install
+
+# echo  "idle" > /usr/local/lib/pythonX.X/site-packages.pth
+
+This last is necessary so idle can find itself.  I hope we can create/append
+this file via setup.py at some point, but it needs to be done manually now, and
+it only needs to be done once (unless you totally remove and reinstall python
+itself).
+
+# exit    from root
+
+NOTE that the above procedure will install idlefork IDLE on top of any
+"official" IDLE that may be already installed.  If you wish to avoid doing
+that, there is a patch file, coexist.patch, in the idlefork directory. If,
+_*before*_ you install idle, you run
+
+# patch -p0 < coexist.patch
+
+idlefork will be modified so that it installs as .../site-packages/fildlelib,
+idle as fidle, and idles as fidles. (If you previously installed without
+patching, remove the idlefork/build directory before running the install.)
+
+NOTE: You must then append "fidlelib" to site-packages.pth !
+
+Then "official" IDLE and idlefork IDLE will exist side by side for comparision.
+And if idlefork is temporarily broken :-(, well, you have your old IDLE ways.
+
+This is obviously an expedient development hack, but if popular, I imagine
+there could be a setup option.

Lib/idlelib/coexist.patch

+? coexist.diff
+? fidle
+? build
+? install.kbk
+? coexist.patch
+Index: PyShell.py
+===================================================================
+RCS file: /cvsroot/idlefork/idle/PyShell.py,v
+retrieving revision 1.6
+diff -c -r1.6 PyShell.py
+*** PyShell.py	2001/07/16 05:25:12	1.6
+--- PyShell.py	2001/07/16 05:53:22
+***************
+*** 470,476 ****
+  
+      def begin(self):
+          self.resetoutput()
+!         self.write("Python %s on %s\n%s\nIDLE Fork %s -- press F1 for help\n" %
+                     (sys.version, sys.platform, self.COPYRIGHT,
+                      idlever.IDLE_VERSION))
+          try:
+--- 470,476 ----
+  
+      def begin(self):
+          self.resetoutput()
+!         self.write("Python %s on %s\n%s\nFIDLE Fork %s -- press F1 for help\n" %
+                     (sys.version, sys.platform, self.COPYRIGHT,
+                      idlever.IDLE_VERSION))
+          try:
+Index: setup.py
+===================================================================
+RCS file: /cvsroot/idlefork/idle/setup.py,v
+retrieving revision 1.4
+diff -c -r1.4 setup.py
+*** setup.py	2001/07/16 04:00:10	1.4
+--- setup.py	2001/07/16 05:53:22
+***************
+*** 5,11 ****
+  import idlever
+  
+  # name of idle package
+! idlelib = "idlelib"
+  
+  # the normal build_py would not incorporate the .txt files
+  txt_files = ['config-unix.txt','config-win.txt','config.txt', 'help.txt']
+--- 5,11 ----
+  import idlever
+  
+  # name of idle package
+! idlelib = "fidlelib"
+  
+  # the normal build_py would not incorporate the .txt files
+  txt_files = ['config-unix.txt','config-win.txt','config.txt', 'help.txt']
+***************
+*** 55,69 ****
+  
+  # Arghhh. install_lib thinks that all files returned from build_py's
+  # get_outputs are bytecode files
+  class idle_install_lib(install_lib):
+      def _bytecode_filenames(self, files):
+          files = [n for n in files if n.endswith('.py')]
+          return install_lib._bytecode_filenames(self,files)
+- 
+  
+! setup(name="IDLE",
+        version = idlever.IDLE_VERSION,
+!       description = "IDLE, the Python IDE",
+        author = "Guido van Rossum",
+        author_email = "guido@python.org",
+        #url =
+--- 55,69 ----
+  
+  # Arghhh. install_lib thinks that all files returned from build_py's
+  # get_outputs are bytecode files
++ 
+  class idle_install_lib(install_lib):
+      def _bytecode_filenames(self, files):
+          files = [n for n in files if n.endswith('.py')]
+          return install_lib._bytecode_filenames(self,files)
+  
+! setup(name="FIDLE",
+        version = idlever.IDLE_VERSION,
+!       description = "FIDLE, the Forked Python IDE",
+        author = "Guido van Rossum",
+        author_email = "guido@python.org",
+        #url =
+***************
+*** 71,81 ****
+  """IDLE is a Tkinter based IDE for Python. It is written in 100% pure
+  Python and works both on Windows and Unix. It features a multi-window
+  text editor with multiple undo, Python colorizing, and many other things,
+! as well as a Python shell window and a debugger.""",
+  
+        cmdclass = {'build_py':idle_build_py,
+                    'install_lib':idle_install_lib},
+        package_dir = {idlelib:'.'},
+        packages = [idlelib],
+!       scripts = ['idle', 'idles']
+        )
+--- 71,86 ----
+  """IDLE is a Tkinter based IDE for Python. It is written in 100% pure
+  Python and works both on Windows and Unix. It features a multi-window
+  text editor with multiple undo, Python colorizing, and many other things,
+! as well as a Python shell window and a debugger.
+! 
+! FIDLE is a separate line of development which was initiated by D. Scherer
+! at CMU as part of Visual Python.  It features execution in a separate
+! process, with a fresh environment for each run. For further details, 
+! refer to idlefork.sourceforge.net.""",
+  
+        cmdclass = {'build_py':idle_build_py,
+                    'install_lib':idle_install_lib},
+        package_dir = {idlelib:'.'},
+        packages = [idlelib],
+!       scripts = ['fidle', 'fidles']
+        )
+*** /dev/null	Tue May  5 16:32:27 1998
+--- fidle	Sat Jul 14 12:40:25 2001
+***************
+*** 0 ****
+--- 1,12 ----
++ #! /usr/bin/env python
++ 
++ import os
++ import sys
++ from fidlelib import IdleConf
++ 
++ idle_dir = os.path.dirname(IdleConf.__file__)
++ IdleConf.load(idle_dir)
++ 
++ # defer importing Pyshell until IdleConf is loaded
++ from fidlelib import PyShell
++ PyShell.main()
+*** idle	Sat Jul 14 12:40:36 2001
+--- /dev/null	Tue May  5 16:32:27 1998
+***************
+*** 1,12 ****
+- #! /usr/bin/env python
+- 
+- import os
+- import sys
+- from idlelib import IdleConf
+- 
+- idle_dir = os.path.dirname(IdleConf.__file__)
+- IdleConf.load(idle_dir)
+- 
+- # defer importing Pyshell until IdleConf is loaded
+- from idlelib import PyShell
+- PyShell.main()
+--- 0 ----
+*** /dev/null	Tue May  5 16:32:27 1998
+--- fidles	Mon Jul 16 02:25:48 2001
+***************
+*** 0 ****
+--- 1,13 ----
++ #! /usr/bin/env python
++ 
++ import os
++ import sys
++ from fidlelib import IdleConf
++ 
++ idle_dir = os.path.dirname(IdleConf.__file__)
++ IdleConf.load(idle_dir)
++ 
++ # defer importing Pyshell until IdleConf is loaded
++ from fidlelib import PyShell
++ # open a shell instead of an editor window
++ PyShell.main(0)
+*** idles	Mon Jul 16 02:27:23 2001
+--- /dev/null	Tue May  5 16:32:27 1998
+***************
+*** 1,13 ****
+- #! /usr/bin/env python
+- 
+- import os
+- import sys
+- from idlelib import IdleConf
+- 
+- idle_dir = os.path.dirname(IdleConf.__file__)
+- IdleConf.load(idle_dir)
+- 
+- # defer importing Pyshell until IdleConf is loaded
+- from idlelib import PyShell
+- # open a shell instead of an editor window
+- PyShell.main(0)
+--- 0 ----