testsuite: --env test now much faster.
parallel: Small code cleanup.
parallel: CPU detection for HURD, IRIX, (old) HPUX.
parallel: CPU detection on SCO OpenServer
testsuite: Minor speedups.
parallel: Implemented --ctrlc which will send SIGINT to remote tasks.
testsuite: Polarhome added.
parallel: bug with --dryrun and virgin jobs.
Passes testsuite.
Released as 20130422 ('Boston').
0install: added version 20130422
README: 10 seconds installation.
10seconds_install: added.
0install: use ftpmirror.gnu.org instead of ftp.gnu.org
0install: check gpg signature when publishing new version
Merge branch 'master' of ssh://git.sv.gnu.org/srv/git/parallel

Conflicts:
	README
parallel: If not using --pipe, --ctrlc is now default.
parallel: --timeout 200% implemented. Test missing.
parallel: Median time implemented using remedian.
parallel: test distribute jobs round robin between --sshlogins.
parallel: Fixed bug when distributing round robin.