MinGW build and FTGL library for Octave 3.1.55

[Benjamin Lindner]

Alexander Mamonov wrote:
> Hello Tatsuro,
> 
> Thank you for your work on Octave version for Windows. After Michael
> has withdrawn his MSVC distribution from Sourceforge, your version
> remains the only option for Windows users.
> However, that version is rather outdated (3.0.2). Do you have any
> plans to make a release of 3.0.5 anytime soon? 

A 3.0.5 release is available.

benjamin