Having every table cell be a text diversion (T{...T}) was too much for
Solaris tbl to handle, and thus "man XCreateGC" would print the error
/usr/man/man3x11/XCreateGC.3x11: line 402: Too many text block diversions
tbl quits
and not display the table of mask bits or any text in the man page after
that table.   Since the #define column doesn't need special handling,
making it not use text diversions brings the table under the tbl limit.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>