Introduce Concept checks for coordinate system

[lpranam]

All the classes in coordinate systems are template class which exposes users to make errors due to using incompatible types. In addition, if the errors are because of boost::units then errors become quite long and sometimes unreadable.

As a solution to that currently BOOST_STATIC_ASSERT is used for internal purpose.

Concepts for coordinate will allow users compile-time checking and such concepts will also eliminate the use of internal long BOOST_STATIC_ASSERT statements.