Debugger: Recognition of module-level Cython code (initmodulename and PyInit_modulename)
Fix debug flag (import Parsing when needed)

Made the distutils extension 2.3 compatible
Renamed the --debug flag to --gdb and --pyrex-debug to --pyrex-gdb

Excludes buffers and C++, which have their own code.
This is in preparation for #591 (inline vs. cdivision) and
support for inline complex arithamtic.

python code stepping (for libpython and libcython)
generic stepper class
fix step-into functions
have cygdb accept a '--' command line argument to disable automatic importing
replace gdb.execute() with something that actually captures all output
have 'cy break' break properly on line numbers

(run: python runtests.py Cython.Tests.TestStringIOTree \
                         Cython.Debugger.Tests.TestLibCython \
                         Cython.Compiler.Tests.TestParseTreeTransforms)

--HG--
rename : Cython/Debugger/cygdb.py => Cython/Debugger/Cygdb.py

C function with context support
Preliminary stepping support
Source code listing
more stuff I forgot about

Write cython_debug to the actual build directory (distutils and the cython
                                                  command line tool)
List --debug flag in cython's usage

added the --pyrex-debug flag to Cython's build_ext
added the pyrex_debug boolean to Cython's Cython.Distutils.extension.Extension
    (for per-module debugging information)
debug output is written to the cython_debug directory
bin/cygdb is included (start this from the build directory)
    working commands: cy import, cy locals, cy break
when debugging is active, export all functions as extern

Now based on regex, as actually parsing the file was way to slow.

--HG--
rename : Cython/Includes/python.pxd => Cython/Includes/Deprecated/python.pxd
rename : Cython/Includes/python2.5.pxd => Cython/Includes/Deprecated/python2.5.pxd
rename : Cython/Includes/python_bool.pxd => Cython/Includes/Deprecated/python_bool.pxd
rename : Cython/Includes/python_buffer.pxd => Cython/Includes/Deprecated/python_buffer.pxd
rename : Cython/Includes/python_bytes.pxd => Cython/Includes/Deprecated/python_bytes.pxd
rename : Cython/Includes/python_cobject.pxd => Cython/Includes/Deprecated/python_cobject.pxd
rename : Cython/Includes/python_complex.pxd => Cython/Includes/Deprecated/python_complex.pxd
rename : Cython/Includes/python_dict.pxd => Cython/Includes/Deprecated/python_dict.pxd
rename : Cython/Includes/python_exc.pxd => Cython/Includes/Deprecated/python_exc.pxd
rename : Cython/Includes/python_float.pxd => Cython/Includes/Deprecated/python_float.pxd
rename : Cython/Includes/python_function.pxd => Cython/Includes/Deprecated/python_function.pxd
rename : Cython/Includes/python_getargs.pxd => Cython/Includes/Deprecated/python_getargs.pxd
rename : Cython/Includes/python_instance.pxd => Cython/Includes/Deprecated/python_instance.pxd
rename : Cython/Includes/python_int.pxd => Cython/Includes/Deprecated/python_int.pxd
rename : Cython/Includes/python_iterator.pxd => Cython/Includes/Deprecated/python_iterator.pxd
rename : Cython/Includes/python_list.pxd => Cython/Includes/Deprecated/python_list.pxd
rename : Cython/Includes/python_long.pxd => Cython/Includes/Deprecated/python_long.pxd
rename : Cython/Includes/python_mapping.pxd => Cython/Includes/Deprecated/python_mapping.pxd
rename : Cython/Includes/python_mem.pxd => Cython/Includes/Deprecated/python_mem.pxd
rename : Cython/Includes/python_method.pxd => Cython/Includes/Deprecated/python_method.pxd
rename : Cython/Includes/python_module.pxd => Cython/Includes/Deprecated/python_module.pxd
rename : Cython/Includes/python_number.pxd => Cython/Includes/Deprecated/python_number.pxd
rename : Cython/Includes/python_object.pxd => Cython/Includes/Deprecated/python_object.pxd
rename : Cython/Includes/python_oldbuffer.pxd => Cython/Includes/Deprecated/python_oldbuffer.pxd
rename : Cython/Includes/python_pycapsule.pxd => Cython/Includes/Deprecated/python_pycapsule.pxd
rename : Cython/Includes/python_ref.pxd => Cython/Includes/Deprecated/python_ref.pxd
rename : Cython/Includes/python_sequence.pxd => Cython/Includes/Deprecated/python_sequence.pxd
rename : Cython/Includes/python_set.pxd => Cython/Includes/Deprecated/python_set.pxd
rename : Cython/Includes/python_string.pxd => Cython/Includes/Deprecated/python_string.pxd
rename : Cython/Includes/python_tuple.pxd => Cython/Includes/Deprecated/python_tuple.pxd
rename : Cython/Includes/python_type.pxd => Cython/Includes/Deprecated/python_type.pxd
rename : Cython/Includes/python_unicode.pxd => Cython/Includes/Deprecated/python_unicode.pxd
rename : Cython/Includes/python_version.pxd => Cython/Includes/Deprecated/python_version.pxd
rename : Cython/Includes/python_weakref.pxd => Cython/Includes/Deprecated/python_weakref.pxd
rename : Cython/Includes/stdio.pxd => Cython/Includes/Deprecated/stdio.pxd
rename : Cython/Includes/stdlib.pxd => Cython/Includes/Deprecated/stdlib.pxd
rename : Cython/Includes/stl.pxd => Cython/Includes/Deprecated/stl.pxd

support setting language level (2 or 3) for source code - currently configures string literals and print()