Make it possible to use multiple-field search operator with :conditions => {[:field1,:field2] => 'value'}
Merge pull request #471 from alexdowad/multiple_field_search_operator

Make it possible to use multiple-field search operator
Treat all SystemCallError subclasses as bad connection errors.
Merge branch 'v1' into v2
Remove debugging message for new connections.
Shifting delta behaviour into separate classes for external re-use.
Before indexing hooks.
Use unique name in deletion scenario.
Merge branch 'v1' into v2

Conflicts:
	lib/thinking_sphinx.rb
Merge remote-tracking branch 'pat/v2'
version bump