FpDebugger (pure): x86_64-debugging on Win64. (Win32-win64 cross-debugging not possible on Windows. Win64-win32 is still not implemented)

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45284 4005530d-fff6-0310-9dd1-cebe43e6787f
FpDebugger (pure): Read software-breakpoint information properly for 64bit-targets.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45285 4005530d-fff6-0310-9dd1-cebe43e6787f
git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45286 4005530d-fff6-0310-9dd1-cebe43e6787f