In addition to r1542550 where TagLibraryInfoImpl.createVariable(...) method is removed.
According to web-jsptaglibrary schema, variableType->declare is 'true' by default.
Adjust default value for 'declare' in o.a.t.util.descriptor.tld.TldRuleSet.Variable to the one expected by the schema.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1550900 13f79535-47bb-0310-9956-ffa450edef68