gdb/585: dummy frames go straight to regcache, need read_register(regcache)

[cagney@redhat.com]

Synopsis: dummy frames go straight to regcache, need read_register(regcache)

Responsible-Changed-From-To: unassigned->cagney
Responsible-Changed-By: cagney
Responsible-Changed-When: Sun Jul 14 09:56:12 2002
Responsible-Changed-Why:
    mine, regcache stuff

http://sources.redhat.com/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=585