Optimize text batch preparation by avoiding dynamic allocation each frame. Use last glyph if rendering the same glyph several times in a row. Changed repeated postincrement of a destination pointer to indexing where applicable.
Renamed the plane intercept parameter to "d" and reversed its sign so that it fits the conventional plane formula ax + by + cz + d = 0.
Travis CI: API documentation update at 2014-01-24 07:33:29 UTC.
[ci skip]
Sync at 2014-01-25 00:14:18 +0800.