(XMAN_DIRS is set).
- Remove spammed-in configure.gen.pre
- Pass thread flags/libs to configure like should have been done
- Add changes to config/cf/* for the fonts ports.
Tested only on x86 so far due to problems installing dependencies on build
cluster. Based on XFree86-4-Server originally, but I decided the history
wasn't worth keeping that much as a lot has been changed.