Test plan: <http://wiki.gentoo.org/wiki/Project:Emacs/Test_plans> Thanks in advance.
Builds and runs fine on x86. Please mark stable for x86.
Stable on alpha.
arm stable
hppa stable
ppc stable
x86 stable
sparc stable (thanks to Rolf Eike Beer)
@amd64: Please stabilise mg-20170828 in bug 638144 instead.