Renamed exp-drd directory into drd. Moved drd from the experimental tool class to the class of regular tools.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@8361 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/Makefile.am b/Makefile.am
index aa644d3..0542488 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,10 +9,10 @@
 		massif \
 		lackey \
 		none \
-		helgrind
+		helgrind \
+		drd
 
-EXP_TOOLS = 	exp-omega \
-		exp-drd
+EXP_TOOLS = 	exp-omega
 
 # Put docs last because building the HTML is slow and we want to get
 # everything else working before we try it.