renamved pkgexists to pkginstalled

git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@2262 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc

scripts/functions

@@ -399,9 +399,9 @@ dump_env() {
 pkgcheck() {
         egrep -q "^$2.* ($1) " $base/config/$config/packages
 }
-# Check if a package exists (is build)
+# Check if a package is already installed
 #
-pkgexists() {
+pkginstalled() {
 	[ -f $root/var/adm/flists/$1 ]
 }