make acl lookup 450x faster by using sblist

tested with 32K acl rules, generated by

    for x in `seq 128` ; do for y in `seq 255` ; do \
    echo "Deny 10.$x.$y.0/24" ; done ; done

after loading the config (which is dogslow too), tinyproxy
required 9.5 seconds for the acl check on every request.
after switching the list implementation to sblist, a request
with the full acl check now takes only 0.025 seconds.
the time spent for loading the config file is identical for both
list implementations, roughly 30 seconds.

(in a previous test, 65K acl rules were generated, but every
connection required almost 2 minutes to crunch through the list...)

0 files changed, 0 insertions, 0 deletions