Support Kakadu 7.5 in GDAL 1.11

[Martin Mikita]

I created patch that applies commit 27787 from trunk for the latest GDAL 1.11.2 and fixes ticket #5745 compilation on Windows for x64.

Could it be reviewed and included into 1.11 branch and be released in the next 1.11 release?

[Martin Mikita]

Patch for Kakadu 7.5 into GDAL 1.11.2. Fixes Windows x64 compilation

[Robert Coup]

Looks good - only hesitation I had initially about backporting it was that it'd break existing compiles previously using older (working) versions of Kakadu. Thoughts @rouault?

[Even Rouault]

Replying to rcoup:

Looks good - only hesitation I had initially about backporting it was that it'd break existing compiles previously using older (working) versions of Kakadu. Thoughts @rouault?

Yes, that was my fear too. JP2KAK builds looks so fragile...

[Robert Coup]

Kakadu is licensed on a subscription basis (well, mine certainly is), so AFAIK there's no particular reason for running old versions (eg. v6) since customers will always have access to the latest version. @MikiBOB, is that your understanding as well?

[Martin Mikita]

Yes. The only reason why somebody will use old version is, when Kakadu's creator changes new version code and GDAL cannot compile with it. We want to use the latest Kakadu, but now we have to apply this patch so we can compile GDAL with it.

[Robert Coup]

@rouault personally I'm okay with it - will be obvious when you compile, doesn't affect any users by default, is easy to resolve, and can be documented in the release notes simply ("If you're using Kakadu < v7.5 you now need to define these macros").

[Even Rouault]

Adressed by #6052