arm requiring known endianness

[vittorio.giovara@xxxxxxxxxxxxxxxxxxxx (Vittorio Giovara)]

Hi,

when you compile pjsip targeting ARM you have to select the endianness 
of the processor.
However if you compile statically you can only find out when some other 
project will include the pjheaders.
Can you move the check at the configure stage in some way?
Thanks,
Vittorio