K 10
svn:author
V 7
antoine
K 8
svn:date
V 27
2015-01-14T18:02:56.894211Z
K 7
svn:log
V 360
MFH: r377011

Require a more recent compiler to avoid bugs with base GCC.

Instead of augmenting the existing patch in files/ to work around a bug with
base GCC that required a working copy constructor in an expression that
actually uses operator=(), just switch to a more modern compiler that does
not have this problem.

This fixes the build on 8.4 and 9.3.

END