Add make --old/new-file, --assume-old/new, --what-if value completions.

CHANGES

@@ -40,6 +40,7 @@ bash-completion (1.x)
   * Add chgrp --reference value completion.
   * Do not assume all --foo= options take filenames in generic long option
     completion, assume only that --*file*= does, and that --*dir*= takes dirs.
+  * Add make --old/new-file, --assume-old/new, --what-if value completions.
 
   [ Todd Zullinger ]
   * Make yum complete on filenames after install, deplist, update and upgrade

bash_completion

@@ -2975,7 +2975,7 @@ _make()
 	_split_longopt && split=true
 
 	case $prev in
-		-@(f|o|W|-?(make)file))
+		-@(f|o|W|-@(?(make|old-|new-)file|assume-@(old|new)|what-if)))
 			_filedir
 			return 0
 			;;