buildrpm: fix rpm release number calculation
It was broken when patch queues were in use.
--- a/contrib/buildrpm Sun Jun 03 14:42:39 2007 +0100
+++ b/contrib/buildrpm Sat Jun 30 01:21:41 2007 +0100
@@ -29,7 +29,7 @@
version=`hg tags | perl -e 'while(<STDIN>){if(/^(\d\S+)/){print$1;exit}}'`
# Compute the release number as the difference in revision numbers
# between the tip and the most recent tag.
-release=`hg tags | perl -e 'while(<STDIN>){/^(\S+)\s+(\d+)/;if($1eq"tip"){$t=$2}else{print$t-$2+1;exit}}'`
+release=`hg tags | perl -e 'while(<STDIN>){($tag,$id)=/^(\S+)\s+(\d+)/;if($tag eq "tip"){$tip = $id}elsif($tag=~/^\d/){print $tip-$id+1;exit}}'`
tip=`hg -q tip`
# Beat up the spec file