Update build.sh boilerplate to match the current template

perl-Error/build.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # This is a buildpkg build.sh script
 # build.sh helper functions
-. ${BUILDPKG_BASE}/scripts/build.sh.functions
+. ${BUILDPKG_SCRIPTS}/build.sh.functions
 #
 ###########################################################
 # Check the following 4 variables before running the script
@@ -13,7 +13,7 @@ source[0]=http://search.cpan.org/CPAN/authors/id/S/SH/SHLOMIF/$topdir-$version.t
 #patch[0]=
 
 # Source function library
-. ${BUILDPKG_BASE}/scripts/buildpkg.functions
+. ${BUILDPKG_SCRIPTS}/buildpkg.functions
 
 # Global settings
 maketest=1