New experiments with "input_manager", replace literal and builtin_literal with literal_expression and builtin_literal_expression

Additionally:
- Disabled some warnings that occur on boost headers.
- Fixed a mistake that omni-base.props ignored the inherited values for ignored warnings.
Merge remote-tracking branch 'remotes/origin/master' into meta-info

Conflicts:
	build/omni-core.vcxproj.filters
	build/omni-tests.vcxproj.filters