+ Expanded test also for qword->double and int32->single conversions.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28311 3ad0048d-3df7-0310-abae-a5850022a9f2
* softfloat: Fixed int64->double and qword->double conversions to take rounding mode into account (actually, brought them up to date with Softfloat-2b C source). Now test/units/math/troundm.pp is consistent for all targets.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28312 3ad0048d-3df7-0310-abae-a5850022a9f2