As C1X is close to being released, there is no need to wrap around a
feature that is already part of C90. Most of these files already use
`const' in different placed as well.
1) Fix style issues in comments.
2) Properly namespaceify changes
3) Appropriate sectioning of changes
Not changed: parenthesis around macro rvalue. That would make the additions
inconsistent with the other entries there, merely a different style violation
rather than a clear and obvious improvement so I'm going to have to disagree
with the judges on that one. If someone wishes to adjust *all* the rvalues
to conform to fully parenthesized marco rule, that would be both consistent
and reasonable but that's beyond the scope of the changes I wish to make at
this time.
o Fix regoff_t typedef to not require <sys/types.h> as a prerequisite
(specifically use `__off_t' instead of `off_t').
o Add restrict type-qualifier to function prototypes.
# This appears to not break X11, but I'm having problems compiling the
# glide part of the server with or without this patch, so I can't tell
# for sure.
