osmo-trx[master]: build: Require and check for gcc C++11 support

[Tom Tsou]

Patch Set 1: Code-Review+2

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Gerrit-MessageType: comment
Gerrit-Change-Id: I96477e4125390b17b43a3705bb1daf98fa01c9bb
Gerrit-PatchSet: 1
Gerrit-Project: osmo-trx
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Gerrit-Owner: Tom Tsou <t...@tsou.cc>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
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Gerrit-Reviewer: Tom Tsou <t...@tsou.cc>
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