if the pCallStack variable is optimized out then any assumptions of the
method's inlined assembler about stack layout collapse. Adding a pseudo
dependency to the pCallStack variable solves that problem

(cherry picked from commit 254359b9)

Conflicts:
	bridges/source/cpp_uno/gcc3_freebsd_x86-64/uno2cpp.cxx
	bridges/source/cpp_uno/gcc3_linux_x86-64/uno2cpp.cxx

Change-Id: I5ba7713c2630bb3ecc4343632e796c38541bcd0e