* sqrt(real): for targets with emulated floating point, invoke float64_sqrt or float32_sqrt from softfpu code. Testing on ARM CPU shows that float64_sqrt executes about twice faster and offers better accuracy than fpc_sqrt_real from genmath.inc.
* softfpu.pp: changed float64_sqrt into a function, so it is consistent with other compiler-invoked routines.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27809 3ad0048d-3df7-0310-abae-a5850022a9f2