Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r260310:

libcpp: misc fixes from Apple's GCC.

Fixes some bugs detected by Apple:
#error with unmatched quotes
pragma mark

Obtained from: Apple GCC 4.2 - 5553

MFC r258826, r259555, r 259558:

libcpp: Merge fixes from upstream
Fixes:
GCC preprocessor/29966:
GCC preprocessor/28709:
GCC c/31924
GCC preprocessor/14331

gcc: add Apple-compatible -Wnewline-eof

Obtained from: gcc per-4.3 (rev. 121340, 124356, 124358, 124730,
125212, 125255 ; GPLv2)
Apple Inc. (Apple GCC 4.2 - 5531)

MFC r258712;

libcpp: fix an underflow.

Similar fix seen in Apple's gcc42.

Obtained from: OpenBSD (Rev 1.2)
MFC after: 2 weeks

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

This commit was generated by cvs2svn to compensate for changes in r169695,
which included commits to RCS files with non-trunk default branches.

GCC 4.2.0 release miscellaneous support libraries.