devel/vxlog: mark BROKEN

In file included from /wrkdirs/usr/ports/devel/vxlog/work/vxlog-1.0.3/src/file-outputter.cc:23:
In file included from /wrkdirs/usr/ports/devel/vxlog/work/vxlog-1.0.3/src/vxlog/file-outputter.h:35:
/wrkdirs/usr/ports/devel/vxlog/work/vxlog-1.0.3/src/vxlog/outputter-interface.h:26:10: fatal error: 'tr1/memory' file not found
#include <tr1/memory>

^~~~~~~~~~~~

Reported by: pkg-fallout
Approved by: portmgr blanket