Mark BROKEN, if truncate(1) is in the base-system.
I misused OSVERSION 500011 (kqueue API changes) for decision,
if truncate(1) is in the base-system (small time-span).
Removes -m flag for truncate(1).
Since the port-distfile is a plain tar -zcf of the propagated tree-version,
add WRKSRC, MANDIR and BINDIR hunks to port-Makefile.