K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2018-12-13T00:42:26.525843Z
K 7
svn:log
V 243
Correctly implemenet atomic_swap_long for mips64.

MIPS64 has 64-bit longs, so use uint64_t for it, otherwise uint32_t.
sizeof(long) == sizeof(ptr) for all platforms, so define
atomic_swap_ptr in terms of atomic_swap_long.

Submitted by: hps@

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