[wxlua-users] Apps fail to build against wx with -fno-exceptions

[strawman <str...@la...>]

wxLua from SVN builds successfully against wxMSW 2.9.3 with 
USE_EXCEPTIONS=0 (-fno-exceptions) set in wx's config.gcc, but building 
apps fails with the attached error.  Using -fno-exceptions in wxLua's 
makefile causes no issues.

Additionally, building apps against wx with DEBUG_FLAG = 0 set in the 
makefile produces a few thousand "undefined reference to 
wxOnAssert/wxTheAssertHandler" errors, unless -DwxDEBUG_FLAG=0 is added 
to wxLua's CPPFLAGS.