LCL: check for Interfaces unit for clipboard. It can be missing when clipboard is used in cmd line prog and LCL dependency added manually.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42446 4005530d-fff6-0310-9dd1-cebe43e6787f
Converter: fix comment

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42447 4005530d-fff6-0310-9dd1-cebe43e6787f
Debugger: More TGDBInstructionQueue / clean up / force stack for stepping

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42448 4005530d-fff6-0310-9dd1-cebe43e6787f
Debugger: Make sure OnIdle is called with small timeouts too

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42449 4005530d-fff6-0310-9dd1-cebe43e6787f
Debugger: Ensure queue lock during gdb communications 

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42450 4005530d-fff6-0310-9dd1-cebe43e6787f
Debugger: More TGDBInstructionQueue / prepare to allow nested calls

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42451 4005530d-fff6-0310-9dd1-cebe43e6787f
Debugger: More TGDBInstructionQueue / fix selecting/changing threads

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42452 4005530d-fff6-0310-9dd1-cebe43e6787f