libtommath: better PPC support for MoarVM

[evanmiller]

Description

Modify the patch from #14336 to support PowerPC. Necessitates a rev-bump because libtommath itself builds on PPC but won't allow MoarVM to build.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.4.11
Xcode x.y

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL?
• checked your Portfile with port lint --nitpick?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?

[reneeotten]

one probably should only increase the revision then on ppc in this case.

I don't think we have buildbots for that anyway, so none of the binaries will be affected and should be rebuild - right?

[mojca]

one probably should only increase the revision then on ppc in this case.

We never do that. While technically correct, it could lead to quite some confusion with no good reason.

I don't think we have buildbots for that anyway, so none of the binaries will be affected and should be rebuild - right?

But that's a good point. No, we don't have a functional buildbot at the moment.
In theory it would still help affected users on PPC, but given that:

• this would only affect users who want to use MoarVM
• MoarVM never worked on PPC to start with
• MoarVM used to be in conflict with this port
  I suspect that in reality this only affects 1-2 developers (and one of them submitted the PR).

Then again, this library is relatively small, so no reason to care that much, no reason for second thoughts.

[reneeotten]

fine with me @mocja and since the port has no maintainer I'll just merge his then.

I do think there is some precedence in selectively increasing the revision for certain systems, but certainly agree that's a bit more messy since someone will need to remember to remove that if-statement containing incr revision at the next update.