• Add missing include to generated code, fixing build of irc/znc
• Fix LICENSE and add LICENSE_FILE
• Remove long obsolete REINPLACE_CMD
• Silence patching and stipping

Upstream bugreport for reference: https://github.com/swig/swig/pull/788

PR: 212196
Submitted by: crees, amdmi3
Approved by: maintainer timeout (sunpoet, 2 weeks)