Postpone the methods checking in the annotation processor

Eclipse’s custom annotations processor does not honour the order of fields and methods as in the source code.
Add better support for Java 7 and 8

Fixes 490
Update the changelog file
Merge pull request #491 from realm/ez-processor-java-version

Add better support for Java 7 and 8
Version bump
Update the changelog
Merge branch 'master' into ez-eclipse-processor

Conflicts:
	changelog.txt
Merge pull request #487 from realm/ez-eclipse-processor

Postpone the methods checking in the annotation processor
Don’t put native libraries in the libs folder
Merge branch 'master' into ez-eclipse-distribution
Update the changelog