Adding FamiTracker standalone app.
More FamiTracker updates.
Merge branch 'musiceditor' into xplatform
fixes compilation of famitracker-lib on osx

fixes compilation of famitracker library but not
the linking step due to unresolved symbols
changes dependency path for osx

makes the project look for its dependencies in deps/osx
which is similar to how windows handles its dependencies
some minor changes to the project files
removes warnings caused by missing attributes on clang
fixed famitracker project file