Add DB_ATTACH=1 option to drop to gdb on valgrind errors

git-svn-id: file:///svn/toku/tokudb@10098 c7de825b-a66e-492c-adef-691d508d4ae1

toku_include/Makefile.include

@@ -160,6 +160,9 @@ VGRIND=valgrind --quiet --error-exitcode=1 --leak-check=full --show-reachable=ye
        --suppressions=$(TOKUROOT)newbrt/valgrind.suppressions \
        --suppressions=$(TOKUROOT)src/tests/bdb.suppressions \
        --gen-suppressions=$(SUPPRESSIONS)
+ifeq ($(DB_ATTACH),1)
+	VGRIND+=--db-attach=yes
+endif
 
 HGRIND=valgrind --quiet --tool=helgrind --error-exitcode=1