UIMA-3303 Add support for "IMPORT type (FROM typesystem)?" statements

git-svn-id: https://svn.apache.org/repos/asf/uima/ruta/trunk@1556712 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3303 Add support for type aliases like "IMPORT type (FROM typesystem)? AS alias"

git-svn-id: https://svn.apache.org/repos/asf/uima/ruta/trunk@1556713 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3303 Add support to import all types from a typesystem using "IMPORT * FROM typesystem"

git-svn-id: https://svn.apache.org/repos/asf/uima/ruta/trunk@1556714 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3303 Add support to import packages from typesystems using "IMPORT PACKAGE pkg FROM typesystem"

git-svn-id: https://svn.apache.org/repos/asf/uima/ruta/trunk@1556715 13f79535-47bb-0310-9956-ffa450edef68