Update build.sh boilerplate to match the current template

vim/build.sh

@@ -1,10 +1,7 @@
 #!/bin/bash
-#
-# This is a generic build.sh script
-# It can be used nearly unmodified with many packages
-# 
+# This is a buildpkg build.sh script
 # build.sh helper functions
-. ${BUILDPKG_BASE}/scripts/build.sh.functions
+. ${BUILDPKG_SCRIPTS}/build.sh.functions
 #
 ###########################################################
 # Check the following 4 variables before running the script
@@ -19,7 +16,7 @@ source[0]=ftp://ftp.vim.org/pub/vim/unix/$topdir-$version.tar.bz2
 # num=0; for i in `grep -v Win32 README | grep -v VMS | grep -v Mac | grep -v \.gz |grep -v \(extra|awk '{ print $2 }'|grep 7.1`; do echo "patch[$num]=$i"; let num=num+1; done
 
 # Source function library
-. ${BUILDPKG_BASE}/scripts/buildpkg.functions
+. ${BUILDPKG_SCRIPTS}/buildpkg.functions
 
 # Global settings
 # We need to override this