Mark argument of VG_(mkstemp) as const.
Fix comment in pub_core_libcfile.h (and make it the only copy)


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14247 a5019735-40e9-0310-863c-91ae7b9d1cf9
drd/Testing.txt: Document how to run all regression tests with conflict set verification enabled

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14248 a5019735-40e9-0310-863c-91ae7b9d1cf9