Log Message:
Update squid package to 2.5.10nb3.

- pkgsrc update:

o s/SQUID_BACKEND/SQUID_BACKENDS/ as suggested by pkglint.
o Fix leaving ${PREFIX}/etc/squid/msntauth.conf.default out of PLIST.
o IP Filter related patches are incorporated to squid.

- Add/update official patches:

o 2005-09-15 11:15 (Major) FATAL: Incorrect scheme in auth header
o 2005-09-15 09:56 (Medium) Odd results on pipelined CONNECT requests
o 2005-09-13 23:59 (Minor) Transparent proxy problem with IP Filter
o 2005-09-11 01:53 (Medium) Clients bypassing delay pools by faking a cache
  hit
o 2005-09-11 01:42 (Cosmetic) Allow leaving core dumps on Linux
o 2005-09-11 01:21 (Cosmetic) enums can not be assumed to be signed ints
o 2005-09-11 01:21 (Cosmetic) Incorrect store dir selection debug message on
  objects >2G
o 2005-09-11 00:57 (Minor) LDAP helpers does not work with TLS (-Z option)