Add compatibility_version and current_version flags when creating dyl…

…ibs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68801 91177308-0d34-0410-b5e6-96231b3b80d8

Makefile.rules

@@ -439,6 +439,7 @@ ifeq ($(OS),Darwin)
   DARWIN_MAJVERS := $(shell echo $(DARWIN_VERSION)| sed -E 's/10.([0-9]).*/\1/')
 
   SharedLinkOptions=-Wl,-flat_namespace -Wl,-undefined -Wl,suppress \
+                    -compatibility_version 1 -current_version 1 \
                     -dynamiclib -mmacosx-version-min=$(DARWIN_VERSION)
   TargetCommonOpts += -mmacosx-version-min=$(DARWIN_VERSION)
 else