core: FIPS for fastpath and RDP security fixes

- fixed invalid stream position if extEncryptionMethods is not used
- enabled 56bit rdp security method
- fixed entropy reduction of the keys for 40 bit and 56 bit
- added rdp security incl. FIPS for fastpath output
- added FIPS encryption to fast path input
- fixed FIPS key generation in server mode
- fixed stream length correction in FIPS mode
- added rdp encryption for licensing packets (apparently some clients,
  specifically cetsc, require the license packets received from the
  server to be encrypted under certain RDP encryption levels)
- replace errnous virtual extended mouse event in focus in event
Merge pull request #1765 from nfedera/fix-2014-04-02-01

core: FIPS for fastpath and RDP security fixes