apr fails in test phase when building from source with Linaro toolchain

[Michael Hope]

Seen with gcc 4.4.4-6ubuntu5~ppa2 and apr 1.4.2-3build1

http://launchpadlibrarian.net/51559441/buildlog_ubuntu-maverick-armel.apr_1.4.2-3build1_FAILEDTOBUILD.txt.gz

cd build-armel/test && ./testall -v -x testsockets testsock testatomic
testdir : SUCCESS
testdso : SUCCESS
testdup : SUCCESS
testenv : SUCCESS
testfile : SUCCESS
testfilecopy : SUCCESS
testfileinfo : SUCCESS
testflock : SUCCESS
testfmt : SUCCESS
testfnmatch : SUCCESS
testargs : SUCCESS
testhash : SUCCESS
testipsub : SUCCESS
testlock : SUCCESS
testcond : SUCCESS
testlfs : SUCCESS
testmmap : SUCCESS
testnames : SUCCESS
testoc : SUCCESS
testpath : SUCCESS
testpipe : SUCCESS
testpoll : SUCCESS
testpools : SUCCESS
testproc : SUCCESS
testprocmutex : make: *** wait: No child processes. Stop.
make: *** Waiting for unfinished jobs....
make: *** wait: No child processes. Stop.

[Marcin Juszkiewicz (hrw)]

Also FTFBS in Ubuntu: http://launchpadlibrarian.net/50844677/buildlog_ubuntu-maverick-armel.apr_1.4.2-3build1_FAILEDTOBUILD.txt.gz

Something wrong is with pthreads part of testprocmutex test.