The basic rule "put parantheses around macro parameters" should be
observed where possible. Otherwise code like

    ConnectionNumber(foo = bar);

fails to compile. (It obviously passes if ConnectionNumber is a C
function.) There are several other macros amended for the same reason.

This bug appeared while building http://ioccc.org/1993/cmills.c, so
historically it was not present.
Signed-off-by: Dominik Muth <muth@nxdomain.no-ip.biz>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>