This patch fixes disksup:get_disk_data for SUSv3, specifically OS X ML

On OS X Mountain Lion, the default output of df command includes iNode
used and iNodes free, which apparent what SUSv3 specifies. This breaks
the current parse logic and reports incorrect results. This patch adds
support for the new format and ensures older versions of OS X produce
this format by adding the -i switch (which is now the default). Adding
support for this new format rather than changing df output as we'll
presumably see this on other platforms eventually.
Add transport_opt() watchdog_config

To make the number of watchdogs sent before the transitions REOPEN ->
OKAY and OKAY -> SUSPECT configurable. Using anything other then the
default config is non-standard and should only be used for test.
Minor spec fix
Rework stats to avoid concurrent read and write

Counters read by diameter:service_info(SvcName, transport) can be
selected at the same time as the diameter_stats server is folding them
into another key, possibly resulting in inaccurate values. Have
diameter_stats select from the server process to avoid this and add
diameter_stats:sum/1 to sum values from all contributors on a given
term.
[test_server] Use simpler tc name in unicode test to make it work on windows

A test case in test_server_unicode_SUITE contained characters that
were not allowed in filenames on windows - e.g. \. The test case name
will be used as filename for the HTML log for the test, so this failed
on windows. This is now corrected.
[test_server] Fix encoding of HTML file references to work on windows

The URI encoding when in unicode  file name mode did not preserve @, :
and  /, and  thus  some links  were  did not  work  on windows  (think
c:/). This has been corrected.
[reltool] Increase timetrap timeout for reltool_server_SUTIE to 10 minutes

The timeout of 5 minutes sometimes expired for test case
use_selected_vsn on some platforms.
[test_server] Clean up unused code in test_server_SUITE
[common_test] Extend timers for slave nodes in ct_cover_SUITE

Also, rename some nodes to avoid node name clash between test cases,
and ensure proper cleanup of nodes.
[jinterface] Make tests handle space in path on windows

Add quotes around classpath on windows.
[observer] Fix non tail-recusive loop when measuring scheduler utilization
[observer] Improve measurement of CPU utilization in etop

Now using scheduler_wall_time instead of runtime/wall_clock to get cpu
utilization. The old version could give CPU utilization far beyond 100%.

Also, a bug which sometimes gave a badarith when calculating the CPU
utilization is corrected.
[observer] Accept current function for a process to be 'undefined' on hipe
[observer] Kill slave node between tests in etop_SUITE

To avoid that the second test case fails (due to duplicate name) if
the first fails - always kill the slave node after each test case.
[observer] Extend timer to allow trace msgs to arrive over tcp/ip

Some tests fail (mostly on windows) every now and then with too few
trace messages in log. Extending the timer from 200 to 500 ms to see
if this is the reason.

Plus removing a compiler warning in ttb_SUITE.
Rework watchdog suite to remove most timing dependencies

Count watchdog messages instead when this is an alternative.
[jinterface] Kill process between tests to avoid consequential error

In some cases when a test case fails, the erl_link_server process
(which is spawned by many test cases in jinterface_SUITE) does not
terminate. This causes the next test case to fail with a badarg as it
tries to register a new process with the same name. To avoid this,
erl_link_server, if it exists, is now killed in end_per_testcase.

Also, some compiler warnings are removed from jitu.erl.
compilation fix for NetBSD

spells __NetBSD__ correctly.
compilation fix for NetBSD

taken from a pkgsrc patch: patch-lib_os__mon_c__src_memsup.c
reduce bashism

taken from from a pkgsrc patch: patch-lib_wx_configure.in