MFH: r484647 r484756 r484876

Fixes:

• build with OpenSSL 1.1
• broken multipart/form-data (CVE-2018-16789)
• Interpret aixterm high-intensity color escape codes

All these patches came from the project pull requests list.

Reported by: pkg-fallout
Security: CVE-2018-16789

Update WWW

• While I'm here, remove no-op GH_ACCOUNT (the default)

Approved by: portmgr (blanket)

Be stricter when matching URLs.

Submitted by: gahr
Obtained from: https://github.com/shellinabox/shellinabox/pull/448/

Approved by: portmgr (blanket)