Added support for GCC 4.x map files, fixing Bug 3122
Also added a few more debug statements, guarded by if $debug.
EXPORTS
?Export1@@YAHXZ @ 1 NONAME ; int __cdecl Export1(void)
?Export2@@YAHXZ @ 2 NONAME ; int __cdecl Export2(void)
?Export3@@YAHXZ @ 3 NONAME ; int __cdecl Export3(void)
?Export4@@YAHXZ @ 4 NONAME ; int __cdecl Export4(void)