support for more architecture in kaa

Hi Dischi, Jason,

There's a bugtracker entry for kaa just in case it was missed. 
https://sourceforge.net/tracker/?func=detail&aid=2976967&group_id=46652&atid=446895

John


'hi,

With this patch, kaa.base uses the ctypes.util.find_library call to find 
libc. This way
many different architectures are supported (where libc is not always 
/lib/lib.so.6 )

Note this important fact.

When kaa is imported, ctypes.util.find_library is called, and it uses 
os.popen which emits a SIGCHLD; so the handler must be connected *after* 
the call to ctypes.util.find_library . Otherwise os.popen triggers the 
handler that forces the kaa notifier initialization; so when we try to 
select a notifier after the import,
an exception is raised because kaa notifier is already initialized; this 
breaks twisted integration.

See http://bugs.debian.org/566902 and http://bugs.debian.org/575293

I attach a patch against current SVN

a.

ps: this patch is due to work by Alexandre Rossi, Mickael Royer, KiBi, 
and me'

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