Add missing archs for 10.5–10.6

[barracuda156]

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Add missing archs: ppc to 10.6 (supported both on 10.6 PPC natively and on 10.6.x via Rosetta) and ppc64 to 10.5.

[vslavik]

Sorry, but I don't see any practical reason to apply this on this long-deprecated legacy branch, just to support even-longer obsolete platforms to build bakefile on. Why?

[barracuda156]

Sorry, but I don't see any practical reason to apply this on this long-deprecated legacy branch, just to support even-longer obsolete platforms to build bakefile on. Why?

@vslavik Thank you for responding! It is up to you to decide, of course, I just saw a relatively recent update to 0.2.13 and assumed it may be relevant.

P. S. For a context, I am contributing to Macports, where we do support all systems from 10.4 onwards, and it is generally preferable to bring fixes to upstream so they may benefit someone who do not use Macports too.

[vadz]

FWIW wx 3.2 (which is the most important, and maybe even the only, user of bakefile 0.x) will still be maintained for quite some time, so if Macports needs to be able to build it on all platforms, why not apply this, it's not like it costs anything.

[vslavik]

OK, I didn't realize it is needed to build wx-3.2 ...