Attach to a running application is failing for gdb and cdb on windows.

For gdb the creator shows a message box with the message "During startup program exited with code 0xc0000135".

When using cdb the whole qt creator crashes if i try to break in the debugger after attaching.

Starting the binary with the debugger attached works in both cases.

It looks like the gdb bug is fixed (at least it worked for a build of the master branch) in the repository.