squid: Update to 3.5.20 with latest patches (14067-14075)

  For details, see:
http://www.squid-cache.org/Versions/v3/3.5/changesets/

Since there were problems with "trailing white spaces" I started a new 'squid_3'
branch from scratch, based on current 'next'.
I hope this is what is needed and that it helps.

This one was built without errors and is running here without seen problems.

Best,
Matthias

Signed-off-by: Matthias Fischer <matthias.fischer@ipfire.org>
---
 lfs/squid                                          |  21 +-
 ...=> squid-3.5.20-fix-max-file-descriptors.patch} |   4 +-
 src/patches/squid/squid-3.5-14051.patch            |  63 ----
 src/patches/squid/squid-3.5-14052.patch            |  34 --
 src/patches/squid/squid-3.5-14053.patch            |  46 ---
 src/patches/squid/squid-3.5-14054.patch            |  37 --
 src/patches/squid/squid-3.5-14055.patch            |  39 ---
 src/patches/squid/squid-3.5-14056.patch            |  36 --
 src/patches/squid/squid-3.5-14067.patch            | 381 +++++++++++++++++++++
 src/patches/squid/squid-3.5-14068.patch            |  35 ++
 src/patches/squid/squid-3.5-14069.patch            |  30 ++
 src/patches/squid/squid-3.5-14070.patch            |  44 +++
 src/patches/squid/squid-3.5-14071.patch            |  70 ++++
 src/patches/squid/squid-3.5-14072.patch            |  33 ++
 src/patches/squid/squid-3.5-14073.patch            | 151 ++++++++
 src/patches/squid/squid-3.5-14074.patch            |  55 +++
 src/patches/squid/squid-3.5-14075.patch            |  38 ++
 17 files changed, 851 insertions(+), 266 deletions(-)
 rename src/patches/{squid-3.5.17-fix-max-file-descriptors.patch => squid-3.5.20-fix-max-file-descriptors.patch} (92%)
 delete mode 100644 src/patches/squid/squid-3.5-14051.patch
 delete mode 100644 src/patches/squid/squid-3.5-14052.patch
 delete mode 100644 src/patches/squid/squid-3.5-14053.patch
 delete mode 100644 src/patches/squid/squid-3.5-14054.patch
 delete mode 100644 src/patches/squid/squid-3.5-14055.patch
 delete mode 100644 src/patches/squid/squid-3.5-14056.patch
 create mode 100644 src/patches/squid/squid-3.5-14067.patch
 create mode 100644 src/patches/squid/squid-3.5-14068.patch
 create mode 100644 src/patches/squid/squid-3.5-14069.patch
 create mode 100644 src/patches/squid/squid-3.5-14070.patch
 create mode 100644 src/patches/squid/squid-3.5-14071.patch
 create mode 100644 src/patches/squid/squid-3.5-14072.patch
 create mode 100644 src/patches/squid/squid-3.5-14073.patch
 create mode 100644 src/patches/squid/squid-3.5-14074.patch
 create mode 100644 src/patches/squid/squid-3.5-14075.patch