Renamed BigDecimalResolution

to BigDecimalConstructorResolution.
Stub for MDM_INSECURE_RANDOM
updated description
Created visitor

It's a pretty simple one
Basic fix working

Spawned kjlubick/fb-contrib#25 in the process.
Refactored out making a fixed Random
Resolved #6

A more thorough implementation would check the java version of the code
and make a different fix for 1.5