Add coverage for untested Hex functions in Ascii.
Added big endian IP address construction to OsNetworkListAdapters
Added Linux-ppc32 build target
Fix TestTimer.

Somehow, on Core-ppc32, MyTimer 'a' was carrying a non-zero sema
into the last phase, which assumes a zeroed sema: "a.Wait()" returned
immediately and ruined all the timing.
Added Linux-ppc32 as build target to hudson_build.py
Merge branch 'master' of ssh://core.linn.co.uk/home/git/ohnet
Allow TestShell watchdog timer to be updated to an arbitrary value.

This allows us to spec a low initial timeout (60s), then bump this up
once we're connected and for the tests that run longer.
Merge branch 'master' of ssh://core.linn.co.uk/home/git/ohnet
Ensure property change callbacks to run immediately a client-initiated resubscribe completes
Merge branch 'master' of ssh://core.linn.co.uk/home/git/ohnet
Fix assertion after repeated failures to send an msearch response.  See #163.