Merge branch 'martinkiva-master'

Allow deletion of more than 200 records in a single delete() call

Fix issue causing first result to be skipped

describeLayout accepts recordTypeIds

Update API version to 27.0

Accept custom SOAP options

Better memory utilization for large result sets

Make QueryResult an iterator

Fix OldValue, NewValue tags in history queries

Fix E_STRICT warnings

Remove unused preoperties from search result class