BIND 10 #2297: Fix isc-sysinfo free memory, uptime, smp output

[BIND 10 Development]

#2297: Fix isc-sysinfo free memory, uptime, smp output
-------------------------------------+-------------------------------------
                   Reporter:  jreed  |                 Owner:  jinmei
                       Type:         |                Status:  reviewing
  defect                             |             Milestone:
                   Priority:  low    |  Sprint-20121106
                  Component:         |            Resolution:
  sysinfo                            |             Sensitive:  0
                   Keywords:         |           Sub-Project:  Core
            Defect Severity:  N/A    |  Estimated Difficulty:  4
Feature Depending on Ticket:         |           Total Hours:  0
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
-------------------------------------+-------------------------------------
Changes (by muks):

 * owner:  muks => jinmei


Comment:

 Hi Jinmei

 * I have pushed some minor cleanup commits. Please check them.
 * `make check` fails:
 {{{
 Running test: process_rename_test.py
 F
 ======================================================================
 FAIL: test_calls (__main__.TestRename)
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "/home/muks/bind10/src/bin/tests/process_rename_test.py", line 62,
 in test_calls
     self.__scan(d, script, fun)
   File "/home/muks/bind10/src/bin/tests/process_rename_test.py", line 32,
 in __scan
     "Didn't find a call to isc.util.process.rename in " + prettyname)
 AssertionError: None is not true : Didn't find a call to
 isc.util.process.rename in src/src/bin/sysinfo/isc-sysinfo

 ----------------------------------------------------------------------
 Ran 1 test in 0.566s
 }}}
 * Can you not use `str(t)` on `timedelta` object for the pretty printing?

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Ticket URL: <http://bind10.isc.org/ticket/2297#comment:7>
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