Deprecate waffle_init and waffle_display_connect

[linyaa-kiwi]

Waffle 1.3 requires that the user initialize the library with waffle_init() before calling waffle_display_connect(). Calling waffle_init() a second time produces an error.

This design is bogus. If multiple uncoordinated components of some application each call waffle_init(), who succeeds and who fails?

Waffle should deprecate waffle_init() and waffle_display_connect() and replace them with something modeled after eglGetPlatformDisplay() from EGL 1.5.