Cosmetic changes, one bug.  Remove tabpage.py, replaced by tabbedpages.py

The new float repr causes too much trouble and pain. I'm disabling the feature until we have sorted out the issues on all machines. 64bit machines seem to have issues and Guido has reported even worse.
Guido: It's pretty bad actually -- repr(1e5) comes out as '1.0'... Ditto for
repr(1eN) for most N... Both in 2.6 and in 3.0...

in signalmodule.c more robust.  Includes Martin von Loewis's suggestion
to set is_tripped after .tripped.

Issue #1580: New free format floating point representation based on "Floating-Point Printer Sample Code", by Robert G. Burger. For example repr(11./5) now returns '2.2' instead of '2.2000000000000002'.

Thanks to noam for the patch! I had to modify doubledigits.c slightly to support X64 and IA64 machines on Windows. I also added the new file to the three project files.

Added wide char api variants of getch and putch to msvcrt module. The wide char methods are required to fix #1578 in py3k. I figured out that they might be useful in 2.6, too.

* remove parameter default that didn't make sense
* properly escape values in output
Thanks to Jeff Wheeler from GHOP!

anything (issue 1538).

Return an error exit status if not all tests passes.

Written for GHOP by Turkay Eren.

If a todo is needed, put it in the tracker.

* Removed a #define from pyconfig.h. The macro was already defined a few lines higher.
* Fixed path to tix in the build_tkinter.py script
* Changed make_buildinfo.c to use versions of unlink and strcat which are considered safe by Windows (as suggested by MvL).
* Removed two defines from pyproject.vsprops that are no longer required. Both are defined in pyconfig.h and make_buildinfo.c doesn't use the unsafe versions any more (as suggested by MvL).
* Added some more information about PGO and the property files to PCbuild9/readme.txt.

Are you fine with the changes, Martin?

Silence more warnings, _CRT_NONSTDC_NO_DEPRECATE is already defined in pyconfig.h but several projects don't include it.

Fixed get_config_h_filename for Windows. Without the patch it can't find the pyconfig.h file inside a build tree.
Added several small unit tests for sysconfig.

Factor-out common calling code by simplifying the length_hint API.
Speed-up the function by caching the PyObject_String for the attribute lookup.

The macros _WIN32, _WIN64 and _M_X64 are defined by the compiler. The VS 2008 IDE doesn't know about (some) of the macros and can display wrong information. In my case a section #ifdef _WIN64 was grayed out although the platform was x64. I've added the macros to pyproject.vsprops and x64.vsprops.
I've also added a paragraph about the property files to the readme and fixed the order of pyupdate > pyinstrument.