Changes to avoid (inappropriate) font-locking during hexl-find-file

Hello! I fixed the following problem: When hexl-find-file opens a file for which font-locking is enabled (eg. a source code file), the buffer is font-locked before hexlify-buffer is called. This wastes time and can lead to inappropriate font-locking in the (then hexlified) buffer. My solution is: * in lisp/files.el: - add a variable 'after-find-file-nomodes' - modify 'after-find-file' so it doesn't alter the file's mode if the variable 'after-find-file-nomodes' is non-nil. * in xemacs-packages/lisp/text-modes/hexl.el: - bind 'after-find-file-nomodes' to 't' when calling 'find-file'. If this solution is acceptable, I will create a patch. (Should I create separate patches for lisp/files.el and the package text-modes?) -Edwin