MFH: r383772

• Update to re-rolled 1.4.0
• Remove deprecated GH_COMMIT with a side effect of making it harder to track from where tag moves in future

Changes: https://github.com/cisco/openh264/compare/3a75956...v1.4.0
PR: 199359
Reported by: marino
Approved by: ports-secteam (delphij)