- Fix build problems on Mac OS X using autotools
- Consistently use #if HAVE_X for platform checks,
rather than #ifdef HAVE_X or #if defined(HAVE_X)
- In Unix build, make lots of compiler checks standard
- Fix some compile warnings
From Matt Arsenault.
Note: there are now lots of compile warnings in clientgui/ on Unix,
mostly in WxWidgets code
svn path=/trunk/boinc/; revision=24303