matplotlib Code

added a show method for gtk fig manager

Delete gd and paint backends.

fixed qt version reporting in setupext.py

There's no need to link ttconv with CXX (it hasn't used it for
sometime, but I forgot to remove it from the build.)

typo in the tcl/tk win32 includes

Change missing header file errors into warnings, since include paths
can be inserted in sneaky ways behind distutils' back ;)

Fix some win32 differences

Change "unknown (no pkg-config)" to "found, but unknown version (no pkg-config)"

Fix erroneous message when wxPython devel headers are not even needed.

Fix order of libraries between freetype2 and zlib