If the dummy pinentry script is not excutable, 10 tests FAIL:

Index: tests/gpg/Makefile.am
===================================================================
--- tests/gpg/Makefile.am	(revision 1301)
+++ tests/gpg/Makefile.am	(working copy)
@@ -71,4 +71,5 @@
 
 ./gpg-agent.conf:
 # This is required for gpg2, which does not support command fd.
+	chmod +x $(abs_srcdir)/pinentry
 	echo pinentry-program $(abs_srcdir)/pinentry > ./gpg-agent.conf