Fixes to annotation parsing.

Resolves utPLSQL#1088 Changed tests to reproduce issue with `dbms_preprocessor` failing to parse source that start with: `package owner.name authid definer is ...`

Author: jgebal

test/ut3_tester_helper/annotation_cache_helper.pkb

@@ -4,7 +4,7 @@ create or replace package body annotation_cache_helper as
  pragma autonomous_transaction;
  begin
  execute immediate
- 'create or replace package ut3_cache_test_owner.granted_test_suite is
+ 'create or replace package ut3_cache_test_owner.granted_test_suite authid definer is
  --%suite
 
  --%test
@@ -19,7 +19,7 @@ create or replace package body annotation_cache_helper as
  procedure test2 is begin ut3_develop.ut.expect( 1 ).to_equal( 1 ); end;
  end;';
  execute immediate
- 'create or replace package ut3_cache_test_owner.not_granted_test_suite is
+ 'create or replace package ut3_cache_test_owner.not_granted_test_suite authid definer is
  --%suite
 
  --%test
@@ -54,7 +54,7 @@ create or replace package body annotation_cache_helper as
  pragma autonomous_transaction;
  begin
  execute immediate
- 'create or replace package ut3_cache_test_owner.new_suite is
+ 'create or replace package ut3_cache_test_owner.new_suite authid definer is
  --%suite
 
  --%test