multimedia/librtmp: Fix build with OpenSSL 1.1.x
- Update LICENSE and add LICENSE_FILE
PR: 231940
Submitted by: Nathan <ndowens@yahoo.com>
Reported by: antoine
Approved by: hrs (maintainer timeout)
Obtained from: https://github.com/JudgeZarbi/RTMPDum-OpenSSL-1.1
MFH: 2018Q4