Removed XEuclidean test, not part of analysis test plug-in

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>
Integrated XEuclid class from former XEuclidean plug-in

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>
Removed old XEuclidean plug-in, added new one (not located in Crypto
repository yet)

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>
Removed old XEuclidean plug-in, new one will be available soon

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>
Removed old XEuclidean plug-in, new one in temporary location

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>