manual: testsuite depends on package.m4

[Ralf Wildenhues]

Hello,

while package.m4 is an optional file, or at least documented as such,
the makefile snippet should be consistent in containing it everywhere.
Users that do without can easily remove all references.  Pushed.

Cheers,
Ralf

    Manual: testsuite depends on package.m4.
    
    * doc/autoconf.texi (Making testsuite Scripts): In the example
    makefile snippet, $(TESTSUITE) depends on $(srcdir)/package.m4.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 45ebdc6..cb1eb74 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -22505,7 +22505,7 @@ clean-local:
 
 AUTOM4TE = $(SHELL) $(srcdir)/build-aux/missing --run autom4te
 AUTOTEST = $(AUTOM4TE) --language=autotest
-$(TESTSUITE): $(srcdir)/testsuite.at
+$(TESTSUITE): $(srcdir)/testsuite.at $(srcdir)/package.m4
         $(AUTOTEST) -I '$(srcdir)' -o $@@.tmp $@@.at
         mv $@@.tmp $@@
 @end example