Also update BUILD.txt

Previously it was a string being passed and converted into an
integer. It will be more efficient this way (and simpler for other
implementers)

uint32_t pointers must point to 32 bit aligned data on ARM. Instead of padding the data to force it into alignment I altered the code to memcpy the data to an aligned location. I'd appreciate any and all feedback especially on whether I took the best approach.

pam_test_client auth and pam_test_client acct now work on my armeb-xscale-linux-gnueabi target.

Signed-off-by: George McCollister <georgem@opteron.novatech-llc.com>

Tevent frees timer handlers once done, so freeing the timer within the event is
going to cause double frees. Just attach the timer event to the request it
depends on and make sure to steal it on NULL if we are going to free the
request from within the handler.

Also pass a flag to the delete callback to tell it if this is a normal
entry removal or we are cleaning up the tbale definitively.

If we fell into the default case of the switch statement, we would
attempt to talloc_free() a random memory location. This patch
guarantees that sdp_req is NULL if it has not been initialized.

This adds a new boolean option to sss_dp_send_acct_req() called
fast_reply. If we make a request to the backends and we are
currently offline, this option will determine whether we should
immediately return from the cache (acceptable for NSS requests) or
potentially wait for an online check to complete (required for PAM
requests).

Change memctx to make clear it should be used only when a callback is being
used.

Turn the backend process into data provider servers
Make Frontends (pam, nss) directly attach to the backends