Changing sort to be in-place.
Merge branch 'master' of github.com:realm/realm-java into kg-bugfix-sort

Conflicts:
	changelog.txt
Validate before calling any table view method.
sort() is now in-place
In sort() throw exception if field name does not exist.
Move sync_if_needed() to macro
Adding sorting functionality to allObjects().
Adding sort functionality to findAll().
Remove unit tests as get_sorted_view() supports many more column types.
Merge branch 'master' into kg-bugfix-sort

Conflicts:
	changelog.txt
	realm/src/androidTest/java/io/realm/RealmResultsTest.java
Merge pull request #634 from realm/kg-bugfix-sort

Changing sort()