arm64 asm branch syntax

[Marc Glisse]

Hello,

for arm64, in copy*.asm, we have b.le, b.lt, b.ge.
In other files, we have beq, bcc, bne (without the dot).
I think we should stick to a single spelling, preferably the first one 
(with a dot) because some toolchains only accept that one.

Is there an aarch64 emulator set up somewhere to test such a change? I 
didn't see anything obvious in the testing status page, but I could have 
missed it.

-- 
Marc Glisse