Update to upstream version 4.0.19
Detailed maintainer log:
- Update to 4.0.19
- Make it possible to set alternative squid_krb5_config via rc script
- Unbreak build with openssl-devel
- Add bdb to USES since some helpers need it (see http://www.squid-cache.org/Versions/v4/changesets/squid-4-15013.patch)
PR: 218505
Submitted by: timp87@gmail.com (maintainer)
MFH: 2017Q2