recoll: use wrapProgram to set $PATH for recoll, recollindex

Many recoll filters assume that $PATH contains all their
dependencies.  Our current patching approach is a game of
whack-a-mole, and while we will continue trying to play it we ought
to set the $PATH as well.

This commit eliminates a huge number of extraneous error messages
from recoll's log, making it easier to see the remaining ones which
really matter.

pkgs/applications/search/recoll/default.nix

@@ -144,6 +144,8 @@ mkDerivation rec {
         substituteInPlace $f --replace /usr/bin/perl   ${lib.getBin (perl.passthru.withPackages (p: [ p.ImageExifTool ]))}/bin/perl
       fi
     done
+    wrapProgram $out/bin/recoll      --prefix PATH : "${filterPath}"
+    wrapProgram $out/bin/recollindex --prefix PATH : "${filterPath}"
     wrapProgram $out/share/recoll/filters/rclaudio.py \
       --prefix PYTHONPATH : $PYTHONPATH
     wrapProgram $out/share/recoll/filters/rclimg \