Targets are independent of each other, so compile them in parallel


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16351 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Makefile b/lib/Target/Makefile
index af39276..06af004 100644
--- a/lib/Target/Makefile
+++ b/lib/Target/Makefile
@@ -7,7 +7,7 @@
 # 
 ##===----------------------------------------------------------------------===##
 LEVEL = ../..
-DIRS = CBackend X86 SparcV9 PowerPC Skeleton
+PARALLEL_DIRS = CBackend X86 SparcV9 PowerPC Skeleton
 LIBRARYNAME = target
 BUILD_ARCHIVE = 1