PR kern/48815: do not skip ';' twice when comparing file versions.
Patch from Thomas Schmitt.
Cleanup pipe(2) flags, now that native handle them.
Use int32_t, int16_t, int8_t.
PR/48843: Jarmo Jaakkola: Soften the language in the manual page,
making less promises about behavior not explicitly stated in the standard.
port over 3 changes made here in the GCC 4.5 tree that we'll need
when GCC 4.8 becomes "gcc.old" eventually.

this tree still needs to be tested for more, but this should be the
bulk of the work.

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Log Message:
prepare for moving GCC 4.5 into gcc.old:

- convert to using ${EXTERNAL_GCC_SUBDIR}
- define base-external-gpl3-gcc* subdir as GCC_SUBDIR
- use <bsd.init.mk> over <bsd.own.mk> for a bunch of places; mostly
  because it arranges for ../Makefile.inc to be included earlier, and
  don't bother including the latter if the former is already included.
- move all .PATH: settings after <bsd.{own,lib}.mk> so that all
  valid variables are set before it is evaluated
- rename mknative-gcc* to match their subdir name.

XXX the relationship between the Makefile.inc/Makefile.gcc_path files
    is kind of sketchy, it would be great if this was fixed.

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Log Message:
oops, avoid re-setting DIST to something that might be wrong now.

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Log Message:
fix another dated DIST.