patch for make-mode.el, add "?=" syntax

[James Lawrence]

Hi,

ChangeLog:

2002-02-02  James Lawrence <jl@imaginengine.com>

   * make-mode.el (makefile-macroassign-regex): Add "?="



*** lisp/progmodes/make-mode.el.orig    Sat Feb  2 17:56:49 2002
--- lisp/progmodes/make-mode.el    Sat Feb  2 19:06:48 2002
***************
*** 126,132 ****
 The normal value should be \" = \", since this is what
 standard make expects. However, newer makes such as dmake
 allow a larger variety of different macro assignments, so you
! might prefer to use \" += \" or \" := \" ."
   :type 'string
   :group 'makefile)

--- 126,132 ----
 The normal value should be \" = \", since this is what
 standard make expects. However, newer makes such as dmake
 allow a larger variety of different macro assignments, so you
! might prefer to use \" += \" or \" := \" or \" ?= \" ."
   :type 'string
   :group 'makefile)

***************
*** 241,247 ****
 ;; that if you change this regexp you might have to fix the imenu
 ;; index in makefile-imenu-generic-expression.
 (defconst makefile-macroassign-regex
!   "^ *\\([^ \n\t][^:#= \t\n]*\\)[ \t]*[*:+]?:?="
   "Regex used to find macro assignment lines in a makefile.")

 (defconst makefile-ignored-files-in-pickup-regex
--- 241,247 ----
 ;; that if you change this regexp you might have to fix the imenu
 ;; index in makefile-imenu-generic-expression.
 (defconst makefile-macroassign-regex
!   "^ *\\([^ \n\t][^:#= \t\n]*\\)[ \t]*[*:+]?[:?]?="
   "Regex used to find macro assignment lines in a makefile.")

 (defconst makefile-ignored-files-in-pickup-regex