Add FindSDL2 package module cmake scripts
Update dependencies & fix spacing issue with code formatted blocks
Add cmake configuration for SDL2 packages
Remove old versions of libraries packaged in extlibs
Reflect nomlib's massive renames in method calls since the dev branch

	* I think I almost have TTcards compiling with a mostly-functional
SDL2 nomlib -- w00t!
Introduce jsoncpp library into project

* This is our phased-in replacement for json_spirit -- yay! I was not
able to successfully get the project linked into nomlib as a static or
dynamic library on OS X, so... inclusion directly was satisfactory evil.
Luckily, jsoncpp came well prepared for that situation!

* See comments made in the cmake scripts for further insight...
Merge branch 'hotfix/v0.9.1' into dev
Merge branch 'feature/jeff/jsoncpp' into dev
Merge branch 'dev' into feature/SDL2/jeff
Merge branch 'feature/SDL2/jeff' into dev
Comment out json_spirit related functionality

* Will be phased out with jsoncpp in time to come...
Remove RELEASE files (info is in github tags)
Improve package generation with CPack

* Info.plist: short version string now includes patch level
* Both DMG volume and output name is now 'TTcards_${VER}'
Remove empty .gitmodules file
Refactor build script to use pre-packaged deps
Initial commit of third-party deps

Source: https://sourceforge.net/projects/nomlib/files/
Update codebase to reflect API changes in nomlib
Update codebase to reflect API changes in nomlib
Fix loading of cards database

This is the official point in time where TTcards starts running with
the new engine; yay!!!

* Use new nom::JSON api for CardCollection::load method
* Introduce Card::set_ranks vector variant
* Update faces & cursors sprite sheets to v0.2.0
* Game.cpp: Comment out a FPS check that crashes the game with SDL2
(reasons unknown)
More fixes for SDL2 port

* Use SCALE_FACTOR of one (1); this corrects positioning calculations that
happen due to the temporary loss of nomlib's rescaling code. This is to
compensate for that!

* Fix up onMouseWheel method code in PlayState && CardsMenuState

* Use nom::ticks function in PlayState (we don’t have to link with SDL2)

* Fix slight miscalculation in bounding rect of gradient background in
CardView class

* Use new transparent color keys as a temporary workaround until I figure
out what is going on with masking issues with SDL2