- Updated gtk SWIGged files to SWIG 1.1 cvs level

- Updated gtk SWIGged files to SWIG 1.1 cvs level
- changed SOURCES treatment in build.py; the path is stripped from the source
file when the object name is derived; this means sources can be anywhere
(typically might be in GENCODEDIR) but the compiled object will always be
in the current dir. (This is how the implicit makefile rule already behaved)
- updated glcanvas/build.cfg for unix builds to copy glcanvas.cpp from
utils/glcanvas (like Setup.in did)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3459 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775