Update the C/C++ verify library to include support for int32 types

 - 'verify_exact' now supports the int32 datatype
 - 'verify_entry' does checks for floating points and integers types
 - int32 tests generated with compliance support to use verify library

Signed-off-by: Emmanuel Adesola <emmanuel.adesola@arm.com>
Change-Id: Id2fd5e4a2d0b975472fe7723e02f086eecd187c8