Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

This commit was generated by cvs2svn to compensate for changes in r46283,
which included commits to RCS files with non-trunk default branches.

Virgin import of gdb-4.18

Import GDB in its full glory (all 25mb). We'll put it on a diet once it's
fully registered.

(This is the second try, the first import ignored .info files but not .info-*
files, for some reason. I'm going to make this consistent.)

Reviewed by: core
Approved for: 2.2