Urgency high because upstream fixed a major regression in 4.1 SMP support.

Update to upstream version '4.2'
with Debian dir 5ceef91ca24112a74ba1d384dfe3f43e9c1b5926

Upstream config tests are designed for use during builds. Debian CI uses a pre-built
binary installation.

Update to upstream version '4.1'
with Debian dir 10ee8e885f16acd60089f0011c8ef58a3ecdcb31

Fixes dpkg-gencontrol: warning: Depends field of package squid3:
  unknown substitution variable ${shlibs:Depends}

Update to upstream version '4.0.25'
with Debian dir 983a31f692226bb2fc31c5fca48bd54bd7d2faf4

Fix lintian file-contains-trailing-whitespace by running
  sed -i -e 's@[[:space:]]*@g' debian/control debian/changelog

fixes a lintian warning about conflicting version requirements.

Requires only updates to VCS headers for Salsa.

Now that we are using debhelper it takes care of this.

Resolves lintian errors.

Now that we are using debhelper to manage the init scripts it takes care
of purging them as well.

This resolves one lintian error.

Resolve a lintian complaint

Update to upstream version '4.0.24'
with Debian dir 19dd68f689a7cf38c28b9cdc9547a95402005c26

Most changes are not relevant, or already done in this package.

      build time

    - Removed unneeded Build-Dep on autotools-dev

Update to upstream version '3.5.27'
with Debian dir d6eccc9ae5367d9e62e3010591a495b610d4fc15