Extending sort support to boolean, integer, float, double, date, and
string fields.
Update changelog.txt
Update RealmResults.java
Update RealmResults.java
Using the Java type names.
Merge branch 'kg-faster-better-sort' of github.com:realm/realm-java into kg-faster-better-sort

Conflicts:
	changelog.txt
	realm/src/main/java/io/realm/RealmResults.java
Merge pull request #463 from realm/kg-faster-better-sort

Extending sort