[3.2] abieos: Fix compile warning -- throw will always call terminate()

[linh2931]

Resolve #5

abieos.cpp produces 120 occurrences of the following warnings:

tests/abieos/src/abieos.cpp:40:13: warning: throw will always call terminate() [-Wterminate]
tests/abieos/src/abieos.cpp:45:13: warning: throw will always call terminate() [-Wterminate]

The offending code is

if (!catch_all)
   throw;

while catch_all is defined as inline const bool catch_all = true;

The solution is, make catch_all constexpr, check if a preprocessor ABIEOS_NOT_CATCH_ALL is defined and set catch_all true or false accordingly; and do if constexpr.

After the changes, no more warnings are generated from aieos.cpp.

[swatanabe]

I think the throw should just be removed. There's no good reason to keep it. The reason that it calls terminate is that the function is declared noexcept. Calling terminate on an exception is wrong in general and is only useful in specialized cases. It was added in a4718fb.

[linh2931]

Thanks Steve. The throw will be removed.