Shiboken ignores the "noexcept" in wrapped function declarations

Trying to wrap parts of the stdlib, I found the code generator ignores the "noexcept" specifier in a function devlaration when generating the "Wrapper" class. I.e. wrapping an std::error_condition, the function

const char* name() const noexcept;

is wrapped with

const char* name() const override;

The missing noexcept in the wrapper causes GCC 8.2 to issue an error "looser throw specifier for '...", with C++ standard set to C+14 or C+17.

A simple fix should be to transfer the noexcept specifier from the wrapped function to the wrapper.

Update: the attached diff for sources/shiboken2/generator/shiboken2/shibokengenerator.cpp will actually fix the issue. Might be you want to add an additional Generator parameter to turn this on/off...