Fix dependencies now that the ARC migrator depends on the static analyzer.

Thanks for pointing this out, Stephen. I think this is right now -- I
attempted to try all four valid combinations with both the autoconf and
CMake builds.

See also LLVM changes to the configure script.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189027 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Makefile b/lib/Makefile
index 5712527..6663268 100755
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -10,8 +10,8 @@
 
 # ARCMigrate and Rewrite are always needed because of libclang.
 PARALLEL_DIRS = Headers Basic Lex Parse AST Sema CodeGen Analysis Frontend \
-                FrontendTool Tooling Driver Format Edit ARCMigrate Rewrite \
-                Serialization Index
+                FrontendTool Tooling Driver Format Edit Rewrite Serialization \
+                Index
 
 include $(CLANG_LEVEL)/../../Makefile.config
 
@@ -23,4 +23,8 @@
 PARALLEL_DIRS += StaticAnalyzer
 endif
 
+ifeq ($(ENABLE_CLANG_ARCMT),1)
+PARALLEL_DIRS += ARCMigrate
+endif
+
 include $(CLANG_LEVEL)/Makefile