Merge from origin/emacs-24

ad89f85 Another minor improvement in ELisp manual  (Bug#20168)
5e2951b Improve docs of 'posn-actual-col-row'  (Bug#20169)
1291ce1 Minor documentation fix in ELisp manual  (Bug#20174)
33e2236 * display.texi (Useless Whitespace): Fix thinko.
ff3878d * configure.ac: Fix jpeg version check to work with gcc >= 5.
90b46f5 Work for the case nnmail-expiry-target is an nnmh group (bug#20170)
e7f92aa authors.el small additions
0bfe915 * etc/PROBLEMS: Add entry about dir-locals and some auto-mounters.
c3c4b75 Fixes: debbugs:18939

Conflicts:
	ChangeLog
	doc/lispref/ChangeLog
	etc/PROBLEMS
	lisp/ChangeLog
	lisp/gnus/ChangeLog
	lisp/simple.el

1 files changed, 24 insertions, 2 deletions

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 2ab85b3f2b7..87d3ec83700 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -1,7 +1,6 @@
 Known Problems with GNU Emacs
 
-Copyright (C) 1987-1989, 1993-1999, 2001-2015 Free Software Foundation,
-Inc.
+Copyright (C) 1987-1989, 1993-1999, 2001-2015 Free Software Foundation, Inc.
 See the end of the file for license conditions.
 
 
@@ -458,6 +457,29 @@ problem by adding this to your .cshrc file:
         endif
     endif
 
+*** Emacs startup on GNU/Linux systems (and possibly other systems) is slow.
+
+This can happen if the system is misconfigured and Emacs can't get the
+full qualified domain name, FQDN.  You should have your FQDN in the
+/etc/hosts file, something like this:
+
+127.0.0.1       localhost
+129.187.137.82  nuc04.t30.physik.tu-muenchen.de nuc04
+
+The way to set this up may vary on non-GNU systems.
+
+*** Visiting files in some auto-mounted directories causes Emacs to print
+`Error reading dir-locals: (file-error "Read error" "is a directory" ...'
+
+This can happen if the auto-mounter mistakenly reports that
+.dir-locals.el exists and is a directory.  There is nothing Emacs can
+do about this, but you can avoid the issue by adding a suitable entry
+to the variable `locate-dominating-stop-dir-regexp'.  For example, if
+the problem relates to "/smb/.dir-locals.el", set that variable
+to a new value where you replace "net\\|afs" with "net\\|afs\\|smb".
+(The default value already matches common auto-mount prefixes.)
+See http://lists.gnu.org/archive/html/help-gnu-emacs/2015-02/msg00461.html .
+
 *** Attempting to visit remote files via ange-ftp fails.
 
 If the error message is "ange-ftp-file-modtime: Specified time is not