[boost] detect contradictory 'without_*' option usage

[SSE4]

moved from https://github.com/conan-community/community/issues/223, by @theodelrieu

Description of Problem, Request, or Question

Hello,

I'm having some trouble with the without_* options:

Let's say I want to build Boost without boost_system, so I run conan install boost/1.70.0@conan/stable -o:without_system=True.

Obviously, boost_system is a dependency of almost every Boost library, so it still gets built, but the without_system=True option is still a part of the package ID...

I'd suggest detecting this kind of incoherence, and warn that the option will be overriden with the correct value.

What do you think?

[SSE4]

I think it's done by #2097