formula: add standard meson args

libdir is especially important on Fedora based distributions,
where it might default to "lib64", but everything else expects "lib",
so forcing the libdir is necessary there.

Library/Homebrew/formula.rb

@@ -1373,6 +1373,11 @@ class Formula
     ["--jobs=#{ENV.make_jobs}", "--max-backjumps=100000", "--install-method=copy", "--installdir=#{bin}"]
   end
 
+  # Standard parameters for meson builds.
+  def std_meson_args
+    ["--prefix=#{prefix}", "--libdir=#{lib}"]
+  end
+
   # an array of all core {Formula} names
   # @private
   def self.core_names

Library/Homebrew/formula_creator.rb

@@ -142,7 +142,7 @@ module Homebrew
             system "go", "build", *std_go_args
         <% elsif  mode == :meson %>
             mkdir "build" do
-              system "meson", "--prefix=\#{prefix}", ".."
+              system "meson", *std_meson_args, ".."
               system "ninja", "-v"
               system "ninja", "install", "-v"
             end