lang/tcl85 and x11-toolkits/open-motif conflict each other: install file in the same place! How to force PKGNG to ignore?

[O. Hartmann]

I have massive trouble to update and install either ports lang/tcl and
x11-toolskits/open-motif, which are both required in my installation.
Some updates of the ports required the recompilation of both of them and
I forgot about which one started first the update before Christmas.

I came out, that both ports were reported conflicting by PKGNG on
FreeBSD 10.0-CURRENT and FreeBSD-9.1-STABLE. In both cases the
registration is denied by the error:

/sbin/ldconfig -m /usr/local/lib
===>   Registering installation for tcl-8.5.13
Installing tcl-8.5.13...pkg: tcl-8.5.13 conflicts with open-motif-2.3.4
(installs files into the same place).  Problematic file:
/usr/local/man/man3/Object.3.gz
*** [fake-pkg] Error code 70

See the already filed PR ports/175126 and ports/174795. Since the
installed ports are incomplete and to install properly the one or the
other, I deleted the other one, in this case it was opportune to delete
lang/tcl85 to have libXm.so back from open-motif.

This nasty blocking situation needs to be solved for me right now and
I'm seeking a way to force the installation. Is there a way to tell
portmaster to ignore the complains and simply brute-force overwrite the
flagged duplicate installation?

Regards,
Oliver

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