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/drd/drd_error.c b/drd/drd_error.c
index a8c0052..c3eb745 100644
--- a/drd/drd_error.c
+++ b/drd/drd_error.c
@@ -95,8 +95,8 @@
 {
   AddrInfo ai;
   const unsigned descr_size = 256;
-  Char* descr1 = VG_(malloc)(descr_size);
-  Char* descr2 = VG_(malloc)(descr_size);
+  Char* descr1 = VG_(malloc)("drd.error.drdr2.1", descr_size);
+  Char* descr2 = VG_(malloc)("drd.error.drdr2.2", descr_size);
 
   tl_assert(dri);
   tl_assert(dri->addr);