Default preprocessing XSLT reload to conserve-memory value #1678
Fix mapref recursion test #1679
Fix single value attribute processing for attribute inheritance #1682
Clean Java code that deals with filenames or paths
Remove grammar cache from use when disabled #1678
Fix unit tests
Remove disable flag from grammar cache

Instead of internally maintaining state whether grammar caching is
enabled, remove state flag and set grammar cache only when needed.
Add new syntax for variables #1188
Add map driven page-sequence generation to PDF #1685
Add configuration variables for front cover and TOC generation
Add index to TOC and clean glossary page-sequence generation
Remove debug message from output
Fix image without href in PDF #1675
Clean PDF Ant script to allow customization.dir to be unset
Remove duplicate string variables #1188
Clean related links stylesheet for HTML

Use functions to reduce code duplication.
Clean HTML related link stylesheet
Convert include.roles into a sequence in HTML stylesheet
Improve accessibility by using nag element in HTML5
Clean HTML related links stylesheet