valgrind: bump to version 3.9.0

Drop some patches:
 - glibc 2.17 and 2.18 are now supported by upstream
 - coregrind/link_tool_exe_linux.in has been reworked and should now
   support ccache

[Peter: drop unneeded AUTORECONF as configure.in no longer gets patched]
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>