main/openresolv: upgrade to 3.9.2

Closed Milan P. Stanić requested to merge mps/aports:3.10-stable-openresolv into 3.10-stable

move helpers from /usr/lib to /usr/libexec/openresolv dir because resolvconf try to execute every file from its LIBEXECDIR remove not needed '|| return 1' from build function

these changes are backported from edge

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