C++ standard library compatibility helpers.

Description

Provide uniform interface to selected C++ standard library features.

For some features not available on all platforms supported by GROMACS, provide back-ports or mappings to available standard library implementations as appropriate.

Namespaces
	gmx::compat
	Compatibility aliases for standard library features.

Directories
directory	compat
	C++ standard library compatibility helpers.
directory	tests
	Tests for C++ standard library compatibility helpers..