Add 'make cscope.files' top level target.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67168 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile b/Makefile
index 660f0e9..b4f60a8 100644
--- a/Makefile
+++ b/Makefile
@@ -23,4 +23,10 @@
 tags::
 	$(Verb) etags `find . -type f -name \*.h | grep -v /lib/Headers | grep -v /test/` `find . -type f -name \*.cpp | grep -v /lib/Headers | grep -v /test/`
 
-.PHONY: test report clean
+cscope.files:
+	find Driver lib include -name '*.cpp' \
+	                    -or -name '*.def' \
+	                    -or -name '*.td' \
+	                    -or -name '*.h' > cscope.files
+
+.PHONY: test report clean cscope.files