Enable catkin_make to use cmake's -C arg

[stonier]

We use 'cmake -C ' to preload the cmake cache quite frequently when cross compiling (usually to load up platform specific variables). I'm sure others also have or will have cause to occasionally use cmake's -C arg.

catkin_make however overrides this arg ('-C' '--directory'). Could this short option tag be changed and have catkin_make drop -D, -G and -C options into the cmake_args?

[dirk-thomas]

Since cmake and make both have a -C option it would be very confusion if catkin_make would pass it to only one of the tools. But we can add options which get passed to CMake - either specifically --cmake-C or generically everything behind --cmake?

[stonier]

I like the latter option - everything behind --cmake.