Add inspection on return stmt
extract some methods from functionCallInspection, to be reusable in other  inspections, GoTypeInspectUtil.java
added @ChangeReturnsParametersFix to change the function return parameters
fix and add a few more Tests, properly handle whether return is a function call
add change log and few tests
Merge pull request #562 from josehsantos/return_inpection_and_fix

Add an inspection to check the type of the returned expressions