SF #1373150, diffs in working copy after a build
Strip off leading dots and slash so the generated files are the same regardless
of whether you configure in the checkout directory or build.
If anyone configures in a different directory, we might want a cleaner
approach using os.path.*(). Hopefully this is good enough.
diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index 14040ad..b276625 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -1,4 +1,4 @@
-/* File automatically generated by ./Parser/asdl_c.py */
+/* File automatically generated by Parser/asdl_c.py */
#include "Python.h"
#include "Python-ast.h"