Pdsh 2.18

Pdsh is a high-performance, parallel remote shell utility. It has built-in, thread-safe clients for Berkeley and Kerberos V4 rsh and can call SSH externally (though with reduced performance).
Pdsh uses a "sliding window" parallel algorithm to conserve socket resources on the initiating node and to allow progress to continue while timeouts occur on some connections.

Enhancements
- Fix duplicate error output from ssh module.
- Add -e option to pdcp to explicitly specify remote execution path. This is necessary if pdcp is installed in a different path locally than on the target hosts.
- Fix recursive pdcp (-r) which has been broken since pdsh-2.12.
- Support --without-ssh-connect-timeout-option for ./configure.
- Add note to pdsh(1) manpage that only very old versions of the genders nodeattr script are supported by the pdsh nodeattr module. The genders module is the preferred interface to genders.