Add -Wno-tautological-compare to the standard compile flags, if that
is accepted.  With XCode 5.5.1 -Wtautological-compare appears to come
as standard, and it generates a lot of mostly useless noise.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14136 a5019735-40e9-0310-863c-91ae7b9d1cf9
Darwin only: don't tell aspacemgr about the kernel commpage -- only
tell the tool.  This is because telling the aspacemgr about it causes
the sync checker to fail entirely on Darwin.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14137 a5019735-40e9-0310-863c-91ae7b9d1cf9
Improve debug printing for the should-we-load-debuginfo-now? finite
state machine.  No functional change.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14138 a5019735-40e9-0310-863c-91ae7b9d1cf9
OSX 10.9/10.8: Debuginfo reading FSM: enable recording of r-- mappings
so as to enable arrival at acceptance states via calls to
VG_(di_notify_vm_protect).



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14139 a5019735-40e9-0310-863c-91ae7b9d1cf9