Revision 1594842

#i124896# remove obsoleted sal-module-internal custom STL allocator

The SAL module avoided the heavy dependency on the stlport4-libraries by using
a custom allocator for its internal STL containers. With stlport4 removed these
dependencies are gone and the SAL-internal custom allocator is obsoleted. Since
the custom allocator results in build problems with clang>=3.4 or xcode>=5.1 it
is time to remove it for good.