BottleSpecification: Do not skip bottle relocation on Linux

Bottles must be relocated on Linux to find the brewed glibc and gcc.

Library/Homebrew/extend/os/linux/software_spec.rb

@@ -0,0 +1,5 @@
+class BottleSpecification
+  def skip_relocation?
+    false
+  end
+end

Library/Homebrew/extend/os/software_spec.rb

@@ -0,0 +1 @@
+require "extend/os/linux/software_spec" if OS.linux?

Library/Homebrew/software_spec.rb

@@ -407,3 +407,5 @@ class PourBottleCheck
     @formula.send(:define_method, :pour_bottle?, &block)
   end
 end
+
+require "extend/os/software_spec"