K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2018-06-27T18:14:33.214535Z
K 7
svn:log
V 728
Fix GCC 4.2.1 to honor --sysroot for includes.

- Change the C++ directory entries to honor --sysroot if it is set.
- Don't define CROSS_INCLUDE_DIR for the cross compiler.  Instead, set
  TARGET_SYSTEM_ROOT to point to WORLDTMP and always define
  STANDARD_INCLUDE_DIR.
- Change STANDARD_INCLUDE_DIR and the C++ include directories to just
  start with "/usr" always.  The compiler will prepend the sysroot when
  doing cross-builds.  GCC_INCLUDE_DIR (which contains headers that ship
  with the compiler such as intrinsincs rather than OS-supplied headers)
  remains hardcoded to look in TOOLS_PREFIX.

Reviewed by:	bdrewery (older version)
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D15127

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