FpDbg: Placed some Windows-specific code between ifdef's to fix compilation on non-Windows systems.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44438 4005530d-fff6-0310-9dd1-cebe43e6787f
FpDbg: Missing part of r44438.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44439 4005530d-fff6-0310-9dd1-cebe43e6787f
FpDbg: Show proper process- and thread-id on application start.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44440 4005530d-fff6-0310-9dd1-cebe43e6787f