Remove share directory

We do no install valgrind supp files for windward, so we can
remove the share directory and associated cmake script.
Specify network connection to tile-monitor

This patch updates the tile-test script to use a network connection
when connecting to a Tilera processor using tile-monitor.  This appears
to address the problem of slow execution and shepherd process crashes
when connecting over the (default?) serial connection.
Update to new libcork array API

Most important for us is that we can add a `free` callback, which will
be used to automatically free each element when the array is finalized.