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svn:author
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jbeich
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svn:date
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2017-10-08T20:33:58.776590Z
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MFH: r451562

multimedia/libvpx: unblock build on mips*

mips* cannot use lang/gcc*, so let it use GCC 4.2 in base.
Other archs may work as well but x86 won't per r422956.

Approved by:	ports-secteam blanket

END