makedep to-dos nice cleanups

[Fred T. Hamster]

1. makedep (file dependencies generator):
   1. makedep should multi-complain:
      1. makedep needs to tell about all problems, not just bomb on first one right away.
   2. parser cant handle hex

"wx_debugger.cpp":1016: defined (MWERKS) && ( (MWERKS < 0x0900)

macintosh )

2. makedep could support this and then the messages would go away.

3. seeing multiple headers of same name in dependencies generated by makedep. isn't that stupid? and broken?
   1. it needs to report the right file name; use the new entry in the filepointer structure.