patch 8.0.0082
Problem:    Extension for configure should be ".ac".
Solution:   Rename configure.in to configure.ac. (James McCoy, closes #1173)
diff --git a/src/mysign b/src/mysign
index 42b6cbb..fc751c0 100644
--- a/src/mysign
+++ b/src/mysign
@@ -1 +1 @@
-=auto/configure-lastupdate=1178970549.78-@buildcheck=dfc15c059b7ce88a951584995c49a201=configure.in@md5=e0d6e9a7d7b986d63ce4e8e7362fd0b9
+=auto/configure-lastupdate=1178970549.78-@buildcheck=dfc15c059b7ce88a951584995c49a201=configure.ac@md5=e0d6e9a7d7b986d63ce4e8e7362fd0b9