Enable colored rendering of new/changed/deleted elements - HTML output only

See http://www.sagehill.net/docbookxsl/Changebars.html for more details
Add explanation on change highlight in the specification
Add revision flags for old changes to the spec
Update PDF name and title of the document
BVAL-265 Expose configuration stored in validation.xml programmatically
BVAL-238 Clarify life cycle rules for ConstraintValidatorFactory

Add releaseInstance contract to ConstraintValidatorFactory
Warn ConstraintValidator users/designers of the pitfalls of non strictly compliant implementations
BVAL-263 Add close method to ValidatorFactory and life cycle rules
BVAL-238 Add description on how a container should behave wrt bootstrapping
BVAL-238 Add section on CDI and EE support for dependency injection
Add missing namespace on the evaluation license
BVAL-258 Add participating members of the new spec and update what's new with CDI support
Move changebar style to css file and change note color to diff with changer style
BVAL-270 BV imp 1.1 must support deployment descriptors of 1.0 and 1.1
BVAL-241: Removing obsolete .cvsignore file
BVAL-241: Adding note on method validation to "Goals" section
BVAL-241: Updating reference, adding .DS_Store to .gitignore
BVAL-241: Adding section 4.5 ("Method-level constraints")
BVAL-241: Adding methods for method validation to javax.validation.Validator, adding examples
BVAL-241: Adding section on @MethodValidated
BVAL-241: Adding method-level related parts to chapter on meta-data API