cut the patch number before a '-' too, to enable '7.11.0-pre1' to use

patch number zero.

maketgz

@@ -16,7 +16,7 @@ curlversion=$libversion
 
 major=`echo $libversion |cut -d. -f1 | sed -e "s/[^0-9]//g"`
 minor=`echo $libversion |cut -d. -f2 | sed -e "s/[^0-9]//g"`
-patch=`echo $libversion |cut -d. -f3 | sed -e "s/[^0-9]//g"`
+patch=`echo $libversion |cut -d. -f3 | cut -d- -f1 | sed -e "s/[^0-9]//g"`
 
 numeric=`echo "obase=16; $major*256*256 + $minor*256 + $patch" | bc`