Backport bugfixes from trunk to 2.1 branch

[gcode-importer]

Originally reported on Google Code with ID 405

compile bugfixes since last release and backport to maintained branches

Reported by detonin on 2014-09-30 12:22:05

[gcode-importer]

Reported by mayeut on 2014-12-03 20:21:44

• Blocking: Multiple issues causing opj_decompress to segfault #446

[mayeut]

@detonin,

Isn't master the same as branch 2.1 ( need to check ABI/API #306 ) ?

[detonin]

@mayeut I merged master in 2.1 branch. According to https://github.com/uclouvain/openjpeg/wiki/DevelopmentProcess, we should actually have a 1.x.y, and a 2.x.y branch, instead of having different branches for minor versions bumps. Anyway, master always corresponds to the latest dev and merging into 2.1 makes sense as we are about to break or at least enhance the API in the next release.