Modularised signal libc stuff into m_libcsignal.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3870 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/memcheck/mac_leakcheck.c b/memcheck/mac_leakcheck.c
index 82c1804..ad626da 100644
--- a/memcheck/mac_leakcheck.c
+++ b/memcheck/mac_leakcheck.c
@@ -35,6 +35,7 @@
 #include "pub_tool_libcbase.h"
 #include "pub_tool_libcassert.h"
 #include "pub_tool_libcprint.h"
+#include "pub_tool_libcsignal.h"
 
 /* Define to debug the memory-leak-detector. */
 #define VG_DEBUG_LEAKCHECK 0