Hi...

Since tcl 8.6 access to some internal variables has been removed from 
the code. It was already deprecated since many years. Attached you find 
2 patches replacing the deprecated stuff with the current official way. 
This is also backward compatible to insight's tcl 8.4 version checkin in 
to sourceware.org.

Changelog:

2012-03-19  Roland Schwingel <roland.schwingel@onevision.com>

         * generic/gdbtk.c: (gdbtk_init,tk_command): Replace deprecated 
access
         to tcl interpreter result string with Tcl_GetStringResult().
         * generic/gdbtk-hooks.c (gdbtk_read,gdbtk_readline,gdbtk_load_hash)
         (gdbtk_query): Likewise

Any comments? Is this ok?

Roland