Update documentation for 2.1.4 release.

git-svn-id: svn+ssh://svn.code.sf.net/p/xmds/code/trunk/xpdeint@2867 41b19578-b77a-4e3b-9682-c8570d237623
Rest of documentation updates.

git-svn-id: svn+ssh://svn.code.sf.net/p/xmds/code/trunk/xpdeint@2868 41b19578-b77a-4e3b-9682-c8570d237623