Integrate bugfixes from sunshine's repository

[Gennady Trafimenkov]

User Sunshine from the Bear's Pit Forums has git repository with some bugfixes and new features.

Repository: https://github.com/hb029/JA-2-Stracciatella

Some info can be found here: http://www.ja-galaxy-forum.com/board/ubbthreads.php/topics/305479/Re_JA2_git_repository_availabl.html#Post305479

Need to check the source codes, extract bugfixes and apply them here.

Reported by Scheinworld from BPF.

[Gennady Trafimenkov]

One bugfix has been applied: 9d986f7 The rest of the changes is seems to be modifications of the game, not bugfixes.