Logging broken due to ambiguous overloads in C++11 and later

[musicinmybrain]

I was looking at picking up a stalled effort to package this in NeuroFedora, and I encountered many compiler errors like the following on GCC 12.1.1.

Using the latest master from this repository:

In file included from /home/ben/src/forks/isis/lib/Core/CoreUtils/types.hpp:17,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/value_base.hpp:20,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/value.hpp:16,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/property.hpp:18,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/progparameter.hpp:22,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/application.hpp:27,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/application.cpp:23:
/home/ben/src/forks/isis/lib/Core/CoreUtils/vector.hpp:242:33: error: ISO C++17 does not allow dynamic exception specifications
  242 |         const this_class &norm()throw( std::invalid_argument ) {
      |                                 ^~~~~
/home/ben/src/forks/isis/lib/Core/CoreUtils/application.cpp: In member function ‘virtual bool isis::util::Application::init(int, char**, bool)’:
/home/ben/src/forks/isis/lib/Core/CoreUtils/application.cpp:88:39: error: ambiguous overload for ‘operator<<’ (operand types are ‘isis::util::Message’ and ‘const char [33]’)
   88 |                 LOG( Runtime, error ) << "Failed to parse the command line";
      |                                       ^~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                          |
      |                                          const char [33]
In file included from /home/ben/src/forks/isis/lib/Core/CoreUtils/log.hpp:18,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/common.hpp:30,
                 from /home/ben/src/forks/isis/lib/Core/CoreUtils/vector.hpp:20:
/home/ben/src/forks/isis/lib/Core/CoreUtils/message.hpp:75:39: note: candidate: ‘isis::util::Message& isis::util::Message::operator<<(T) [with T = const char*]’
   75 |         template<typename T> Message &operator << ( T val ) {
      |                                       ^~~~~~~~
/home/ben/src/forks/isis/lib/Core/CoreUtils/message.hpp:79:18: note: candidate: ‘isis::util::Message& isis::util::Message::operator<<(const isis::util::MSubject&)’
   79 |         Message &operator << ( const MSubject &subj ) {
      |                  ^~~~~~~~

It wasn’t immediately clear to me how best to resolve the ambiguity.

The logging code compiles as expected when I explicitly add -DCMAKE_CXX_STANDARD=98, although there are other unrelated compiler errors.