Merge mc_replace_strmem.c, hg_intercepts.c and drd_strmem_intercepts.c
    
Move memcheck/mc_replace_strmem.c to shared/vg_replace_strmem.c and
add several intercepts for SSE-variants. Include that source file from
drd/drd_strmem_intercepts.c, helgrind/hg_intercepts.c and
memcheck/mc_replace_strmem.c.

Merge memcheck/tests/filter_memcpy into tests/filter_stderr_basic.
    
Update tests/check_headers_and_includes.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13719 a5019735-40e9-0310-863c-91ae7b9d1cf9