GeanyLua: Update to match latest Geany's Scintilla API

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@xiota, could you look at these changes? I started to suspect that new types should be added to glspi_scintilla_param...
(I'm guessing they're numbers, but I'm not sure.)

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Updated.

[xiota]

I don't know what the new values are, but it's fine with me, since the header is autogenerated.

I wonder whether running the scripts to generate headers should be part of the build process.

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Some of them (SLT_*FULL) are just like the old ones, only bigger: 64-bit instead of 32-bit (well, I am not familiar with people who open files larger than 2 GB in Geany, but why not?).

I wonder whether running the scripts to generate headers should be part of the build process.

I'm not sure because there's no need to do this every time and such a case cannot be caught automatically, the user can only see with his eyes (?).
(But I could be wrong, I usually use ready-made files for build systems.)

[xiota]

@b4n I think this should be fine to merge, but I can't really test because my local builds are against stable geany. (I regenerate the symbols before build).