Log Message:
Update squid package to 2.5.10

* squid 2.5.STABLE10 + official + one official patch.

    - 2005-05-25 23:01 (Cosmetic) Double content-length often harmless

  Other fixes are already done by official patches for squid 2.5.STABLE9.

* Add missing cachemgr.cgi.8 to PLIST.
* Introduce options.mk which may need to be brushed more.
* Drop support for diskd on Darwin since diskd needs System V msg function
  which dosen't supported on Darwin.
* Real fix for transparent proxy with IP Filter, fix PR pkg/30085.