PCP Updates: qa fallout from ipv6/unix sockets for pmlogger and pmlc

[Dave Brolley <brolley@xxxxxxxxxx>]

The commits below fix some of the qa fallout from these changes. There 
is still one outstanding problem which is affecting quite a few tests 
(039 046 053 085 161 178 234 242 248 304 352 354 466 524 593 650). The 
problem occurs when pmlogger is running as a normal user. In that case, 
pmlogger is unable to bind to (i.e. create) the unix domain socket in 
/var/run/pcp because that directory is not writable by normal users 
(drwxrwxr-x. 2 pcp pcp). Perhaps another location in that case?
Dave
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commit 14098f8b0f89f6364fdadcad2523a381069db3d4
Author: Dave Brolley <brolley@xxxxxxxxxx>
Date:   Fri Feb 14 11:43:34 2014 -0500

    Fix qa fallout from ipv6/unix socket implementation for pmlogger/pmlc.

    Address output differences caused by the default host now being
    local:

    Addresses regressions in qa tests 098 100 101 103 104 105 106 172 
183 368 497
commit 71b527021a9c9b366a802bf54777b9063fcc12a3
Author: Dave Brolley <brolley@xxxxxxxxxx>
Date:   Fri Feb 14 11:41:12 2014 -0500

    Tighten up lexical definition of a host url.

    Addresses qa fallout for test 645 from the ipv6/unix: socket
    implementation for pmlogger and pmlc.

commit 83d4c2df654aab4caa2f808c143ace8268e45f45
Author: Dave Brolley <brolley@xxxxxxxxxx>
Date:   Fri Feb 14 11:39:00 2014 -0500

    Return actual status code from connectLogger.

    Was returning -1 on error.
    Addresses qa fallout for qa test 439 from ipv6/unix socket
    implementation for pmlogger.