Bug 8753 - Smartmatch substitute, Math::Random::Secure, Perltidy, Passwordrecovery.t

Bug 8753 - Smartmatch substitute, Math::Random::Secure, Perltidy, Passwordrecovery.t

This is a collection of changes taken from different comments (but mostly comment 21 and comment 122).

Passes qa and prove, on my machine at least.

There's also a new test file, Passwordrecovery.t, which covers every method of C4::Passwordrecovery.

To test:

All normal checks plus :

    1/ Receive the email
    2/ Click on the link
    3/ Change the pwd
    4/ Click again on the link
    5/ You should immediately get an error message

Problems with Math/Random/Secure.pm, is solved in following patch, signing off
Signed-off-by: Marc Veron <veron@veron.ch>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>