v3.5.28

Changes to squid-3.5.28 (15 Jul 2018):

- SQUID-2018:1: crash processing SSL-Bumped traffic containing ESI
- SQUID-2018:2: crash handling responses to internally generated requests
- SQUID-2018:3 / CVE-2018-1172: crash in ESI Response processing
- Bug 4861: HTTPMSGLOCK missing pointer safety
- Bug 4829: IPC shared memory leaks when disker queue overflows
- Bug 4767: SMP breaks IPv6 SNMP and cache manager queries
- Bug 2821: Ignore Content-Range in non-206 responses
- HTCP: Ignore HTCP packets with invalid URI
- SSL-Bump: fix authentication with schemes other than Basic
- TPROXY: Fix clientside_mark and client port logging
- Fix "Cannot assign requested address" for to-origin TPROXY FTP data
- Fix --with-netfilter-conntrack error message
- Validate mime icon URL before allocating store entries
- ... and many documentation changes