K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2020-03-28T17:00:38.572636Z
K 7
svn:log
V 163
zfs: fix -fno-common issues

A similar (or identical?) fix has already landed in OpenZFS.

-fno-common will become the default in GCC10/LLVM11.

MFC after:	3 days

END