Ptolemaic dock upgrade. Fixes #2217

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@14834 3db68df2-c116-0410-a063-a993310a9797
Texture system refactoring and cleanup, fixes #2455, patch by IronNerd.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@14835 3db68df2-c116-0410-a063-a993310a9797
Cleanup tex_codec, fixes #2456, patch by IronNerd.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@14836 3db68df2-c116-0410-a063-a993310a9797
Applying the new improvements: Gulf of Bothnia.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@14837 3db68df2-c116-0410-a063-a993310a9797
Merge 'remotes/trunk'