UNITY: Call g_type_init but define DISABLE_DEPRECATION_WARNINGS
UNITY: Check for GLib version at runtime

g_type_init() is deprecated since 2.36
TSAGE: R2R - Remove some obsolete comments
MADS: Rex - Remove an erroneous assert on newPalIndex
MADS: Rex - Empty properly the current line buffer before getting the next menu line
MADS: Introduction animation is starting to be shown
MADS: Fix refreshing backgound at start of intro animation
MADS: Fix palette for display of intro animation
MADS: Fix for switching between animations in AnimView sequence
TSAGE: R2R - Remove TODO as the implementation isn't required in ScummVM
Merge pull request #521 from tobiatesan/sensible_unity

UNITY: Fix runtime dependency on glib > 2.36