changelog update
build bump. added build number to constants for convenient access to this number on static contexts.
Improved OSUtils to recognize OUYA, preparing app for OUYA compliance, will need ouya-sdk to use their in-app purchase system
New UserAgent object, creates a few special HTTP headers expected by FrostClick so that it can handle search results better depending on the FrostWire client hardware and version.
Refactored FrostClickSearchPerformer to receive a UserAgent object which has to be populated by the current version of FrostWire. UserAgent was placed in common so desktop can make use of this.
the SearchEngine class instantiates the FrostClickSearchPerformer using a UserAgent object and the Android OSUtil class to populate the UserAgent object, things shouldn't break on the desktop side since this SearchEngine implementation belongs to android gui only.