for one HSQLDB_JAR is already a path and secondly, gb_Helper_make_path
doesn't even exist (anymore). It's supposed to end up in
URE_MORE_JAVA_CLASSPATH_URLS so use gb_Helper_make_url

Change-Id: I52c6117299caeb4fac8c894fc54564befc673e67
Reviewed-on: https://gerrit.libreoffice.org/55552
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>