revised schemas

["Denenberg, Ray" <rden@loc.gov>]

I have revised all (seven) of the schemas, see http://www.loc.gov/standards/sru/oasis/#draftSchemas

and have normalized their namespaces, as follows:

sru 2.0 response
"http://docs.oasis-open.org/ns/search-ws/sru-2-0-response";

faceted results  
http://docs.oasis-open.org/ns/search-ws/facetedResults";

search result analysis
"http://docs.oasis-open.org/ns/search-ws/searchResultAnalysis";

diagnostic
"http://docs.oasis-open.org/ns/search-ws/diagnostic";

scan
"http://docs.oasis-open.org/ns/search-ws/scan";

explain
"http://docs.oasis-open.org/ns/search-ws/explain";

xcql
"http://docs.oasis-open.org/ns/search-ws/xcql";