Support queries for phrases

[GoogleCodeExporter]

I have a query where I want to limit the result based on the value of a 
solr.StrField. This is not tokenized and the value can contain spaces, like 
"Region A". I can query this if the phrase is quoted with double quotes, but it 
failes if the double quotes are urlencoded.

A working url is:

 fq=%2Bregion%3A"Region+A"

If I call 

raw_query(..., fq=['+region:"Region A"'])

SearchHandler.raw() urlencodes all parameters passed in and queries with:

 fq=%2Bregion%3A%22Region+A%22

which does not match anymore.

Thread on the mailinglist:
http://groups.google.com/group/solrpy/browse_frm/thread/8c38110e8560361b

Original issue reported on code.google.com by sen...@rehfisch.de on 2 Apr 2011 at 8:13