Merge all remaining changes from branches/PTRCHECK.  These are some
relatively minor extensions to m_debuginfo, a major overhaul of
m_debuginfo/readdwarf3.c to get its space usage under control, and
changes throughout the system to enable heap-use profiling.

The majority of the merged changes were committed into
branches/PTRCHECK as the following revs: 8591 8595 8598 8599 8601 and
8161.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@8621 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index 19c828f..001c45c 100644
--- a/configure.in
+++ b/configure.in
@@ -1518,6 +1518,9 @@
    exp-omega/Makefile
    exp-omega/tests/Makefile
    exp-omega/docs/Makefile
+   exp-ptrcheck/Makefile
+   exp-ptrcheck/tests/Makefile
+   exp-ptrcheck/docs/Makefile
    drd/Makefile
    drd/docs/Makefile
    drd/scripts/download-and-build-splash2