Compilation fails without platform-supplied aligned malloc

[smuehlst]

When none of none of posix_memalign(), memalign() and _aligned_malloc() is available, compilation of the current HEAD revision 5799672 fails.

Discussion is on the mailing list: Building OpenJPEG without a platform-supplied aligned memory allocation function.

[mayeut]

@smuehlst, I pushed a version that shall be ok. Tested on my side by forcing this definitions to be used.
Please close the issue if everything works on your side.

[smuehlst]

@mayeut: Thanks for the comments and for the update to my implementation. It works fine for me. The only issue is that there's a compiler warning about pointer arithmetic with void * pointers.

I created pull request #644 with a fix for the warning.

[mayeut]

@smuehlst, I just merged your PR. Should be ok without warnings now.

[smuehlst]

@mayeut: Thanks, all is good now, closing this issue.