Modify codegen_SAHF so the instrumenter doesn't generate spurious
value errors if parts of %eax other than %ah are undefined.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13
Allow suppressions with only a single level of backtrace, for suppressing
against libraries compiled with -fomit-frame-pointer.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11