Log Message:
Pullup ticket #4623 - requested by taca
www/squid3: security update

Revisions pulled up:
- www/squid3/Makefile                                           patch
- www/squid3/distinfo                                           patch
- www/squid3/patches/patch-compat_compat.h                      new file
- www/squid3/patches/patch-src_ip_Intercept.cc                  patch

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Apply patch:
- Fix buidling when IPF is turned on
- Update to version 3.4.12