Fixed-width integer bindings for reductions

[jdinan]

Teams reduction operations don't have bindings for fixed-width integer types (e.g. int32_t). Do users need support for these types?

[nspark]

Here's the path we're taking...

• Split the reduction types table between team- and active-set-based reductions
• Add type support for fixed-width integer types (including size_t and ptrdiff_t) to team-based reductions
• Set the type support for active-set-based reductions as matching the API of OpenSHMEM 1.4; i.e., 1.5 will not add any new active-set reduction types.

Here's the main point of feedback we're seeking:

• Do we add support (or not) for bitwise operations in team-based reductions for C's standard signed integer types (i.e., char, signed char, short, int, long, long long)? These types are not required to be twos-complement and bitwise operations may not be supported on them on all architectures.

[nspark]

Closed by 1.5rc1