This commit add support for more atomic operations and type. The
operations added are logical and, logical or, logical xor, swap, min,
and max. New types are 32-bit int by using the
MCA_BTL_ATOMIC_FLAG_32BIT flag, 64-bit float by using the
MCA_BTL_ATOMIC_FLAG_FLOAT flag, and 32-bit float by using both
flags. Floating point numbers are supported by packing the number in
as an int64_t or int32_t. We will update the btl interface in the
future to make this less confusing.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>