Basic: Simplify getClangRepositoryPath and getClangRevision.

 - I don't like returning StringRef's ever, unless it is actually important for
   performance, which it isn't here.

 - Also, stop validating getClangRevision to be an integer, I don't see a good
   reason to do this.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115071 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Makefile b/lib/Basic/Makefile
index 7dd5221..61accba 100644
--- a/lib/Basic/Makefile
+++ b/lib/Basic/Makefile
@@ -16,9 +16,11 @@
 
 include $(CLANG_LEVEL)/Makefile
 
-SVN_REVISION := $(shell $(LLVM_SRC_ROOT)/utils/GetSourceVersion $(PROJ_SRC_DIR)/../..)
+SVN_REVISION := $(strip \
+	$(shell $(LLVM_SRC_ROOT)/utils/GetSourceVersion $(PROJ_SRC_DIR)/../..))
 
-SVN_REPOSITORY := $(shell $(LLVM_SRC_ROOT)/utils/GetRepositoryPath $(PROJ_SRC_DIR)/../..) 
+SVN_REPOSITORY := $(strip \
+	$(shell $(LLVM_SRC_ROOT)/utils/GetRepositoryPath $(PROJ_SRC_DIR)/../..))
 
 CPP.Defines += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include \
          -DSVN_REVISION='"$(SVN_REVISION)"' -DSVN_REPOSITORY='"$(SVN_REPOSITORY)"'