Bug in literal type checking

[yuvalsimon]

In iz.literal(ASTNode,int) we get NumberFormatException for the literal 0x1p31 since it is considered an integer. need to check the type correctly in method NumericLiteralClassifier.type(), but it can be both float and double type. InfixTermsZero and InfixSubtractionZero throws this exception on guava on the literal above (also they seem to be the same tip)