* Unbreak build on macos (and on other platforms) that do not have
HAVE_DLINFO_RTLD_DI_TLS_MODID.
* add the copyright notice in auxprogs/getoff.c
* add more prereq to hgtls.vgtest



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14297 a5019735-40e9-0310-863c-91ae7b9d1cf9