Removing val definitions pointing to Unit values
+ Generating errors as comments
+ emitSource6-15 in GenericCodeGen
+ Test check files has been updated.
+ Fixing emitAssignment usage in the project
compile2 to compile5 added to ScalaCompile
Tuple6 lifter added.
inversion optimization technique applied to while loops
HashCode added to ObjectOps (## method on Any)
List "foreach" method lifter added.