Convert the calls to ps in swift-orphans to calls that will work on
Solaris.

diff --git a/bin/swift-orphans b/bin/swift-orphans
--- a/bin/swift-orphans
+++ b/bin/swift-orphans
@@ -42,12 +42,12 @@ Example (sends SIGTERM to all orphaned S
             if name.endswith('.pid'):
                 pids.append(open(os.path.join(root, name)).read().strip())
                 pids.extend(subprocess.Popen(
-                    ['ps', '--ppid', pids[-1], '-o', 'pid', '--no-headers'],
+                    ['pgrep', '-P', pids[-1]],
                     stdout=subprocess.PIPE).communicate()[0].split())
 
     listing = []
     for line in subprocess.Popen(
-            ['ps', '-eo', 'etime,pid,args', '--no-headers'],
+            ['ps', '-eo', 'etime=', '-o' 'pid=', '-o' 'args='],
             stdout=subprocess.PIPE).communicate()[0].split('\n'):
         if not line:
             continue
@@ -58,6 +58,7 @@ Example (sends SIGTERM to all orphaned S
             sys.exit('Could not process ps line %r' % line)
         if pid in pids:
             continue
+        # XXX Do we get enough of the arguments to get "once"?
         if (not args.startswith('/usr/bin/python /usr/bin/swift-') and
             not args.startswith('/usr/bin/python /usr/local/bin/swift-')) or \
                 'swift-orphans' in args or \