This reverts commit d1a3b82da3af42e56d8821f298c6aa53d9900e49.
Actually touch only openscengraph package.
Above commit has accidentally included other pending changes...
In file included from /usr/include/pthread.h:30:0,
from src/OpenSceneGraph-3.4.0/src/OpenThreads/pthreads/PThread.cpp:23:
src/OpenSceneGraph-3.4.0/src/OpenThreads/pthreads/PThread.cpp: In static member function 'static void* OpenThreads::ThreadPrivateActions::StartThread(void*)':
src/OpenSceneGraph-3.4.0/src/OpenThreads/pthreads/PThread.cpp:140:13: error: 'memset' was not declared in this scope
CPU_ZERO( &cpumask );