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)

Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.

Added some 2-line source files to get a direct correspondence
between sources and objects. This will be used to avoid messy
special cases in Makefile.inc.