maint: Allow for EXAMPLES in texi2pod

The next commit will add an EXAMPLES section to qemu-nbd.8;
for that to work, we need to recognize EXAMPLES in texi2pod.
We also need to add a dependency from all man pages against
the generator script, since a change to the generator may
cause the resulting man page to differ.
Signed-off-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NRichard W.M. Jones <rjones@redhat.com>
Message-Id: <20190117193658.16413-3-eblake@redhat.com>
Reviewed-by: NVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

Makefile

@@ -858,6 +858,8 @@ docs/interop/qemu-qmp-ref.dvi docs/interop/qemu-qmp-ref.html \
     docs/interop/qemu-qmp-ref.txt docs/interop/qemu-qmp-ref.7: \
 	docs/interop/qemu-qmp-ref.texi docs/interop/qemu-qmp-qapi.texi
 
+$(filter %.1 %.7 %.8,$(DOCS)): scripts/texi2pod.pl
+
 # Reports/Analysis
 
 %/coverage-report.html:

scripts/texi2pod.pl

@@ -398,7 +398,7 @@ $sects{NAME} = "$fn \- $tl\n";
 $sects{FOOTNOTES} .= "=back\n" if exists $sects{FOOTNOTES};
 
 for $sect (qw(NAME SYNOPSIS DESCRIPTION OPTIONS ENVIRONMENT FILES
-	      BUGS NOTES FOOTNOTES SEEALSO AUTHOR COPYRIGHT)) {
+	      BUGS NOTES FOOTNOTES EXAMPLES SEEALSO AUTHOR COPYRIGHT)) {
     if(exists $sects{$sect}) {
 	$head = $sect;
 	$head =~ s/SEEALSO/SEE ALSO/;