LazDebuggerFp (pure): Implemented single-stepping (assembly level) and resetting of a breakpoint after it has been hit. (Windows)

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44670 4005530d-fff6-0310-9dd1-cebe43e6787f
LazDebuggerFp (pure): Set function result when requesting a dcRun command.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44671 4005530d-fff6-0310-9dd1-cebe43e6787f