move Rscons.absolute_path?() to Util

lib/rscons.rb

@@ -66,19 +66,6 @@ module Rscons
       application.vars(*args)
     end
 
-    # Return whether the given path is an absolute filesystem path.
-    #
-    # @param path [String] the path to examine.
-    #
-    # @return [Boolean] Whether the given path is an absolute filesystem path.
-    def absolute_path?(path)
-      if RUBY_PLATFORM =~ /mingw/
-        path =~ %r{^(?:\w:)?[\\/]}
-      else
-        path.start_with?("/")
-      end
-    end
-
     # Return whether the given target is a phony target.
     #
     # @param target [Symbol, String] Target name.

lib/rscons/util.rb

@@ -2,6 +2,19 @@ module Rscons
   module Util
     class << self
 
+      # Return whether the given path is an absolute filesystem path.
+      #
+      # @param path [String] the path to examine.
+      #
+      # @return [Boolean] Whether the given path is an absolute filesystem path.
+      def absolute_path?(path)
+        if RUBY_PLATFORM =~ /mingw/
+          path =~ %r{^(?:\w:)?[\\/]}
+        else
+          path.start_with?("/")
+        end
+      end
+
       # Make a relative path corresponding to a possibly absolute one.
       #
       # @param path [String]
@@ -10,7 +23,7 @@ module Rscons
       # @return [String]
       #   Relative path.
       def make_relative_path(path)
-        if Rscons.absolute_path?(path)
+        if absolute_path?(path)
           if path =~ %r{^(\w):(.*)$}
             "_#{$1}#{$2}"
           else