[Grace-core] updated wikipages on Pattern Matching & Types Questions

[James Noble]

I've updated some pages on the wiki:

https://projects.cecs.pdx.edu:8443/~black/NewOOL/index.cgi/wiki/GracePatternMatchingSyntaxGrace

   - this now has a revised syntax I think may be do-able, and some questions we need to answer

https://projects.cecs.pdx.edu:8443/~black/NewOOL/index.cgi/wiki/TypesQuestions

   - some questions about types

J