Modularised assertions and panics in m_libcassert.

As part of this, killed the VG_STRINGIFY macro, which was used to expand
out names like "VG_(foo)" and "vgPlain_foo" in assertion failure
messages.  This is good since we actually want the "VG_(foo)" form used
in these messages.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3842 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/cachegrind/cg_main.c b/cachegrind/cg_main.c
index 1c13db3..a7bfd6b 100644
--- a/cachegrind/cg_main.c
+++ b/cachegrind/cg_main.c
@@ -33,6 +33,7 @@
 #include "pub_tool_debuginfo.h"
 #include "pub_tool_hashtable.h"
 #include "pub_tool_libcbase.h"
+#include "pub_tool_libcassert.h"
 #include "pub_tool_libcprint.h"
 #include "pub_tool_mallocfree.h"
 #include "pub_tool_options.h"