cross compiling under Win32 using mingw32

	modified:   CMakeLists.txt
	modified:   cmake-modules/FindTrimesh2.cmake
add built exe with upx
add editing selected point handler, fix a number of bugs, export and import selection
Add name convention utility
change display of handler selections and cursor
Fix import bug when loading selections
no display of ground; fix a bug where switch to cross cursor
rename to iVertSelect
add readme for iVertSelect
Fix memset for floats
fix win gl lib