latest merge breaks compiling against mysql-5.1

[Alexey Bychko]

to reproduce:
* bzr branch lp:percona-xtrabackup/2.0
* AUTO_DOWNLOAD=yes ./utils/build.sh 5.1

result: a lot of errors, build failed

last 2 commits:

revno: 502 [merge]
committer: Alexey Kopytov <email address hidden>
branch nick: 2.0
timestamp: Sat 2013-03-02 15:22:59 +0400
message:
  Merge trunk.
------------------------------------------------------------
revno: 501
committer: Alexey Kopytov <email address hidden>
branch nick: 2.0
timestamp: Mon 2013-02-04 11:32:47 +0400
message:
  Bug #1114955: xtrabackup_pid remains existed after execution

  Fix a regression introduced by the fix for bug #1055989: in case the
  xtrabackup process has finished copying the log file and terminated
  before wait_for_ibbackup_finish() is called, remove the stale
  xtrabackup_pid file.

[Alexey Kopytov (akopytov)]

I can build it. The errors in the attached log should not happen when CXXFLAGS contains -fpermissive. It does contain it for me.

[Alexey Kopytov (akopytov)]

Oh, that's actually a regression introduced by https://code.launchpad.net/~laurynas-biveinis/percona-xtrabackup/BT-28340-cpp-2.0/+merge/149810

-fpermissive is added for "innodb51_builtin" and "innodb50" targets, but not for their synonyms, "5.0" and "5.1".

[Alexey Kopytov (akopytov)]

Workaround: use "build.sh innodb51_builtin" instead of "build.sh 5.1"

[Alexey Kopytov (akopytov)]

Never appeared in any released version, does not need to be reflected in release notes.