File 'compile' now removed as well

When using `make maintainer-clean` the file 'compile'
was not removed.

.gitignore

@@ -17,6 +17,7 @@ Makefile.in
 aclocal.m4
 autodefs.h
 autom4te.cache
+compile
 config.guess
 config.h
 config.h.in

Makefile.am

@@ -29,7 +29,8 @@ MAINTAINERCLEANFILES = \
 	$(srcdir)/config.h.in $(srcdir)/config.h.in~\
 	$(srcdir)/install-sh $(srcdir)/missing \
 	$(srcdir)/depcomp $(srcdir)/aclocal.m4 \
-	$(srcdir)/config.guess $(srcdir)/config.sub
+	$(srcdir)/config.guess $(srcdir)/config.sub \
+	$(srcdir)/compile
 
 bin_PROGRAMS = openvpn-gui