Gloss Fix

[J. Johnston]

I have checked in a patch to the sid gloss component to prevent the hostops::close method from
closing file handles 0, 1, or 2.  This previously would occur when a user application closed the std
streams.  It caused problems when SID was used remotely by gdb to run multiple applications.  When
both file handles 1 and 2 are closed, this causes a gdb watchdog timer expiration to occur.

-- Jeff J.