[MacPorts] #50153: MoarVM: upgrade and fix some issues

[MacPorts]

#50153: MoarVM: upgrade and fix some issues
---------------------+--------------------
  Reporter:  mojca   |      Owner:  will@…
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  MoarVM  |
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Comment (by mojca):

 Relevant lines from `./Configure.pl` where we might need a change:
 {{{
 #!perl
 if ($args{'has-libtommath'}) {
     $defaults{-thirdparty}->{tom} = undef;
     unshift @{$config{usrlibs}}, 'tommath';
 }
 else {
     $config{cincludes} .= ' ' . $defaults{ccinc} . '3rdparty/libtommath';
     $config{install}   .= "\t\$(MKPATH)
 \$(DESTDIR)\$(PREFIX)/include/libtommath\n"
                         . "\t\$(CP) 3rdparty/libtommath/*.h
 \$(DESTDIR)\$(PREFIX)/include/libtommath\n";
 }
 }}}

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Ticket URL: <https://trac.macports.org/ticket/50153#comment:3>
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