Always include config.h, confmagic.h, and options.h.

Files no longer need to include config.h, confmagic.h, and options.h,
since they are force included in the compile command.  This prevents
things from breaking if someone (like me) forgets to include options.h
before including some other file that happens to depend on options.h.
Ideally, conf.h would be in this set too but it currently has non-config
stuff in there as well.

This will also break the win32 build until someone updates the project
files to add the appropriate /FI flags.

git-svn-id: https://pennmush.googlecode.com/svn/trunk@1782 ba372814-4f39-11de-9ad6-1127a62b9fcd