changing its mouse pointer. Currently this is only used in the (slightly-
arbitrarily-defined) "heavy" bits of SSH-2 key exchange. We override pointer
hiding while PuTTY is busy, but preserve pointer-hiding state.
Not yet implemented on the Mac.
Also switch to frobbing window-class cursor in Windows rather than relying on
SetCursor().
git-svn-id: svn://svn.tartarus.org/sgt/putty@5303
cda61777-01e9-0310-a592-
d414129be87e