Handle APR_TIMEUP return value from blocking ap_get_brigade() call
Handle APR_TIMEUP return value from blocking ap_get_brigade() call

The API documentation does not say under which conditions this may
happen, so I have to replicate mod_ssl behavior here, which is
basically the same as for APR_EAGAIN.

airtower-luna/mod_gnutls,airtower-luna/mod_gnutls,airtower-luna/mod_gnutls