[Solr Wiki] Update of "FieldAliasesAndGlobsInParams" by HossMan

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The "FieldAliasesAndGlobsInParams" page has been changed by HossMan.
The comment on this change is: lang field overrides is another example usecase.
http://wiki.apache.org/solr/FieldAliasesAndGlobsInParams?action=diff&rev1=7&rev2=8

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   * no way to prevent certain users from getting certain fields
   * no way to prevent faceting on certain fields
   * in most cases, searching and sorting on the same logical field requires clients to know two differenet field names (ie: "q=name:foo&sort=name_sortable+asc")
+  * configuring language specific overrides for some field names (ie: "q=title:foo+summary:bar&lang=fr" should cause the title_fr and summary_fr fields to be used)
  
  = Broad Idea =
  Add robust support for letting solr admins configure what special syntax or aliases can be used *at query type* to refer to fields based on context (sorting, returned fields, search fields, facet fields, etc...)
@@ -38, +39 @@

    * ie: "fl=name,importance" ... importance might be the score fields
   * "for this param, take any string that looks like a fieldname and append/prepend this string to it"
    * ie: any field name specified in the sort param can have "_sort" appended to it.
+  * "for this param, take any string that looks like a fieldname and append/prepend this other param to it"
+   * ie: any field name specified in the sort param can have "_sort" appended to it
+   * ie: any field name specified in the q param can have the value of the lang param appended via some syntax like "_$lang"
   * "for this param, alias this string to a regex or glob"
    * ie: "fl=stockFields&fl=priceFields&facet.field=catFields" might mean return all fields matching two configured regexes and facet on all fields related to categorization.
   * "allow users to specify globs for this param" or "allow users to specify regexes for this param"