Resolved xt test failures
Removed Math::Trig usage. manually computing trig functions
v0.006

 - Removed Math::Trig usage. manually computing trig functions [Shantanu]
 - Resolved xt test failures [Shantanu]
 - Refactoring Submodule to allow easy loading of similar subdevices as
   plugins using a common prefix in MOP [Shantanu Bhadoria]
 - minor changes [Shantanu Bhadoria]
 - minor changes [Shantanu Bhadoria]