This was because SIGALRM always interrupts sleep()
and keeps boinc_sleep() stuck in its while loop.
Solution: change boinc_sleep() so that it works even if
rapid signals (e.g. interval timer) are happening
- API: remove deprecated graphics files from Makefile.
Old-style graphics are no longer supported.
- web: add empty show_user_donations_private() to donations.inc
svn path=/trunk/boinc/; revision=14513