* libc/include/stdio.h: Add new iprintf and iscanf variants. Also
do some reordering.
* libc/machine/powerpc/vfscanf.c: Remove __sccl function.
* libc/stdio/Makefile.am: Add support for new iprintf and iscanf
family functions.
* libc/stdio/Makefile.in: Regenerated.
* libc/stdio/fiprintf.c: Remove doc to siprintf.c.
* libc/stdio/iprintf.c: Ditto.
* libc/stdio/local.h (__svfiscanf_r): New prototype.
* libc/stdio/siprintf.c: Add docs for various iprintf family functions.
* libc/stdio/sniprintf.c: Move docs to siprintf.c.
* libc/stdio/stdio.tex: Add new functions.
* libc/stdio/vfscanf.c: Split out __sccl function to separate
file and add special name defines so this file can be used
to build vfiscanf.o.
* libc/stdio/asiprintf.c: New file.
* libc/stdio/fiscanf.c: Ditto.
* libc/stdio/iscanf.c: Ditto.
* libc/stdio/sccl.c: Ditto.
* libc/stdio/siscanf.c: Ditto.
* libc/stdio/vasiprintf.c: Ditto.
* libc/stdio/viprintf.c: Ditto.
* libc/stdio/viscanf.c: Ditto.
* libc/stdio/vsiprintf.c: Ditto.
* libc/stdio/vsiscanf.c: Ditto.
* libc/stdio/vsniprintf.c: Ditto.
* libc/include/sys/lock.h: Replaced empty {} with (0) to conform
with locking API.
* libc/include/sys/stdio.h: (_flockfile)[!_SINGLE_THREAD]: Add
check for__SSTR in _flags and if set, skip lock request.
(_funlockfile)[!SINGLE_THREAD]: Ditto.
* libc/stdio/local.h (CHECK_INIT): Added check that _REENT is
not NULL.
* libc/stdio/siprintf.c (siprintf, _siprintf_r): Added missing
initialisation of _file to -1 in local FILE.
* libc/stdio/snprintf.c (snprintf, _snprintf_r): Ditto.
* libc/stdio/sscanf.c (sscanf, _sscanf_r): Ditto.
* libc/stdio/vsnprintf.c (vsnprintf, _vsnprintf_r): Ditto.
* libc/stdio/vsscanf.c (_vsscanf_r): Ditto.
* libc/stdio/sscanf.c (sscanf, _sscanf_r): Added __SSTR flag to
_flags in local FILE to prevent locking.
* libc/stdio/vsscanf.c (_vsscanf_r): Ditto.