scripts/pycompile: Accomodate latest Python 3 codebase

scripts/pycompile: Accomodate latest Python 3 codebase

As of the version 3.6.0 compile_dir() call will treat its 'quiet'
argument as a full blown integer rather than a boolean value and perform
integer comparison operations such as '<' or '>='.

To account for that convert ReportProblem type to be a true derivative
of built-in int() and override all of int's rich comparison operators in
order to be able to "sniff" for PyCompileError in all possible use-cases

The integer value ReportProblem pretends to be is teremined by class
variable VALUE which is set to 1.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>