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svn:author
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kwm
K 8
svn:date
V 27
2017-04-17T18:55:56.069729Z
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V 250
Introduce new "meson" USES.

This uses will handling building software that uses the meson
build system. Expand the option framework to handle MESON options.

Approved by:	portmgr (swills@)

Differential Revision:	https://reviews.freebsd.org/D104091

END