minor spacing change
#149 created schematron schema for ancillary validation

for iso-639-2 language and iso 3166-1 country codes
minor changes
deleted backup files
minor change
#149 added schematron rule for scriptcodes

Using xml file from Debian iso-codes project
added @lang to @langcode and @scriptcode to @script context
added files reporting new and removed elements
added namespace to grammar

ns="urn:isbn:1-931666-22-9
changes to test files

For development of conversion stylesheet
Update .gitignore
restored xslt directory
Merge branch 'develop' of https://github.com/SAA-SDT/EAD-Revision into develop

Conflicts:
	.gitignore
added doc directory
Moved element_names.txt to doc directory
Removed comment, logged in GitHub
Added a.common to e.relations
Removed @scriptcode from <relation>

Superceded by @script in a.common.
Renamed @type to @linktype in am.simplelink

Per previous decisions there should be no attributes called "type".
Rather than xlinktype, I suggest we go back to "linktype", which was
used in EAD 1.0.
Changed relationentry to zeroOrMore

To match EAC-CPF. No need to require one if we permit objectXMLWrap.