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)

Upgrade to Groff 1.19.

Revert the last change and mark the program as PROG_CXX.

Add -lstdc++ to the link args for these C++ tools so that they can be
compiled with gcc-3.1. Somebody thought it was a good idea to move
the implementation of new and delete from libgcc to libstdc++. This
change doesn't harm the current compiler in the tree.

Upgrade to Groff 1.17.