* typecheck_real_to_currency: generate inline round() node instead of direct call to fpc_round_real, this allows target-specific processing to take place and possibly emit more efficient code.
* Provide x86_64 SSE versions of fpc_trunc_real and fpc_round_real, strictly they are not necessary after the above change to code generation, but it still reduces size of system unit by avoiding compilation of related generic code.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25735 3ad0048d-3df7-0310-abae-a5850022a9f2