MFH: r459855 r460136 r460317

Update to 7.58.0

• Add BROTLI and LIBSSH options

Changes: https://curl.haxx.se/changes.html

Remove LIBSSH option to avoid circular dependency

libssh uses cmake which depends on curl.

Fix BROTLI option

Approved by: portmgr (implicit)
Security: CVE-2018-1000007