...otherwise e.g. during execution of sw/PythonTest_sw_python.mk
workdir/*/LinkTarget/Library/libtest.dylib would not find
workdir/*/LinkTarget/Library/libunotest.dylib without yet another addition to
DYLD_LIBRARY_PATH.  (Special cases where NONE libs are located somewhere else
than workdir/*/LinkTarget/Library/ can be and are still found via
DYLD_LIBRARY_PATH.)

Change-Id: Ia301746842ef49393d0229915c01b61e378ca100