• Update to 3.5.1 [1]
• Honor NOPORTEXAMPLES if NOPORTDOCS not defined [2]

PR: ports/167987 [1]
Submitted by: Jyun-Yan You <jyyou@cs.nctu.edu.tw> [1]
Reviewed by: scheidell@ (me) [2]
Approved by: Jaap Boender <jaapb@kerguelen.org> (maintainer)