[gcc/meissner/heads/work196-math] (15 commits) Merge commit 'refs/users/meissner/heads/work196-math' of gi

[Michael Meissner]

The branch 'meissner/heads/work196-math' was updated to point to:

 5b27a9f6d7bb... Merge commit 'refs/users/meissner/heads/work196-math' of gi

It previously pointed to:

 e07838f07364... Add ChangeLog.math and update REVISION.

Diff:

Summary of changes (added commits):
-----------------------------------

  5b27a9f... Merge commit 'refs/users/meissner/heads/work196-math' of gi
  56203bb... Add ChangeLog.math and update REVISION.
  473e86a... Update ChangeLog.* (*)
  16afa73... Use architecture flags for defining _ARCH_PWR macros. (*)
  36b4a47... Add rs6000 architecture masks. (*)
  06745b4... Do not allow -mvsx to boost processor to power7. (*)
  7de48d5... Use vector pair load/store for memcpy with -mcpu=future (*)
  a2084f2... Add -mcpu=future tests. (*)
  ab39407... Add -mcpu=future tuning support. (*)
  81c30dc... Add support for -mcpu=future (*)
  c91f9a8... Change TARGET_MODULO to TARGET_POWER9. (*)
  54e6fc5... Change TARGET_POPCNTD to TARGET_POWER7. (*)
  66fe8ea... Change TARGET_CMPB to TARGET_POWER6. (*)
  afa2141... Change TARGET_FPRND to TARGET_POWER5X. (*)
  a7fbb58... Change TARGET_POPCNTB to TARGET_POWER5. (*)

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    Because the reference `refs/users/meissner/heads/work196-math' matches
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