Add framework for resolving (pun intended) libc namespace issues, using
wrapper .h files and asm labels to let internal calls resolve directly and
not be overridable or use the PLT. Then, apply that framework to most of
the functions in stdio.h, string.h, err.h, and wchar.h. Delete the
should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here.

tests clean on i386, amd64, sparc64, powerpc, and mips64

naming feedback from kettenis@ and millert@
ok kettenis@

Make __svfscanf() the unlocked, core of vfscanf() and use it in
sscanf()/vsscanf() where locking is unnecessary.

ok millert@

Adapt things to use __type_t instead of _BSD_TYPE_T_
Add new sys/_types.h header
Include machine/_types.h or sys/_types.h where applicable

zap remaining rcsid.

Kill old files that are no longer compiled.

okay theo

next citrus step.

reviewed by millert, otto, kevlo, naddy, kettenis...
libc+libstdc++ bump

let vfscanf be a real function. Use a weak_alias on systems where this
is feasible.

Okay millert@

There's a major libc bump coming that is going to cover this as well...

Change internals of FILE: reuse the unget buffer field to access an
extended attribute data structure (pimpl idiom). Idea taken from citrus.
Much discussion with deraadt@, otto@, millert@...

This is the least disruptive way to extend FILE, since its size can't really
change without this being a flag day. So the size doesn't change.

Actual additions to the structure will come in separate steps, since this
change is nasty enough on its own.

Tests by otto@ and others, careful reading of code by otto@ and millert@.

This is definitely a major bump, and has been checked to not impact a
full ports build.

deregister + ansify, no change in object code. ok deraadt@ millert@

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

a first pass at -Wall

Remove dead code
Remove unused variables
Silence some warnings
lint(1) is your friend

Fix RCS ids
Make sure everything uses {SYS,}LIBC_SCCS properly

branches: 1.1.1;
Initial revision