Brandon Philips fb1951204c etcdserver: move atomics to make etcd work on arm64
Follow the simple rule in the atomic package:

"On both ARM and x86-32, it is the caller's responsibility to arrange
for 64-bit alignment of 64-bit words accessed atomically. The first word
in a global variable or in an allocated struct or slice can be relied
upon to be 64-bit aligned."

Tested on a system with /proc/cpuinfo reporting:

processor       : 0
model name      : ARMv7 Processor rev 1 (v7l)
Features        : swp half thumb fastmult vfp edsp thumbee neon vfpv3
tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc0d
CPU revision    : 1
2015-08-08 18:11:41 -07:00
..
2015-02-28 11:46:21 -08:00
2015-07-07 16:01:51 +01:00
2015-02-28 11:46:21 -08:00
2015-07-07 16:01:51 +01:00