Updating bundled linux executables.

Updating executables `dpp-msbayes.pl`, `msbayes.pl`, `obsSumStats.pl`,
and `sumstatsvector` in the linux bin directory. These now provide
additional sorting-index options, and use a new default value for the
sorting index (11). However, the package-wide `PyMsBayes` default is
still sort index 7 (group sum stat vectors by taxon, take the means of
the stats across loci, and resort the vector of means among the taxa by
pi_between).

`sumstatsvector` is statically-linked and built on a 64-bit Rocks
cluster (kwyjibo).
Updating `sumstatsvector` linux binary.

New binary does not produce debug messages. It is a statically linked
binary built on 64-bit Rocks cluster (kwyjibo).