Updated specification and schema

Hi everyone,

The specification document and the XSD schema have been updated to reflect
the changes for id and annotates and have been posted online:
http://www.oasis-open.org/committees/xliff/documents/xliff-specification.htm
http://www.oasis-open.org/committees/xliff/documents/xliff-core-1.1.xsd

Note: John's rewording for annotates has been implemented.

Kenavo,
-yves