in boot target and use $(srcdir)/Makefile.pre.in

Got rid of most redundant \ continuation signs.

Fix 1: add a method geturl() to the file-like object returned by urlopen().
Fix 2: treat http error 301 the same as error 302.

Test for / as well as for SEP for MS filenames.
Drop trailing separator from sys.path[0] for MS and Unix filenames.

for tk_menuBar and tk_bindForTraversal
(i.e. don't call these for Tk >= 4.1)

Added some cross refs about broken lambda and broken recursion of
nested functions.

layout more similar to ppc project layout

- Unified initialization code for interpreter and applet
- Implemented new options to skip AE-processing for argc/argv and for
  disabling interactive option setting