Fix bug #18528 with crashes at startup during frameset restoration.

 src/w32term.c (w32_read_socket): Don't use frame dimensions for
 resizing if GetClientRect returned an empty (0, 0, 0, 0)
 rectangle.  Check the return value of GetClientRect, and don't use
 the results if it didn't succeed.
 src/dispnew.c (change_frame_size_1): Recompute the frame dimensions
 in columns and lines after correcting the pixel dimensions in
 check_frame_size.
 (adjust_decode_mode_spec_buffer): Add assertion to avoid passing
 negative values to xrealloc.
* etc/package-keyring.gpg: New file.
* lisp/erc/erc-track.el (erc-modified-channels-display): Update all mode lines
if needed.  Remove call to erc-modified-channels-object
where we ignored the return value.
(erc-modified-channels-update): Don't force-mode-line-update here any more.
etc/charsets/README: Delete a stray quote character.
* lisp/emacs-lisp/package.el (package-check-signature): Default to nil if
GPG is not available.
(package-refresh-contents): Don't mess with the keyring if we won't
check the signatures anyway.
Check in accumulated leuven-theme updates before it's too late

* themes/leuven-theme.el: Updates.
Fix bug #18545 with lack of scrolling a window when point goes out of view.

 src/xdisp.c (cursor_row_fully_visible_p): Update commentary.
 (redisplay_window): Treat the frame's frozen_window_starts flag
 the same way as the optional_new_start flag for the window: only
 obey it if the glyph row showing point will be fully visible.
 Likewise when the window start is in a continuation line.  If,
 after trying everything under the 'force_start' label, point is
 still not fully visible, give up and scroll the window.  Add
 debugging traces.
 src/window.c (Frecenter): Set the window's redisplay flag.
Release MH-E version 8.6.

* NEWS, MH-E-NEWS: Update for MH-E release 8.6.

* mh-e.el (Version, mh-version): Update for release 8.6.

* mh-comp.el (mh-insert-x-face): Ensure that mh-x-face-file is a
string before trying to use it (closes SF #474).
(mh-bare-components): New function to create a temporary initial
components file; replaces mh-find-components. Improve the temp folder
and file names as per a suggestion from Bill Wohler. Also address
XEmacs compatibility issues: use mm-make-temp-file instead of
make-temp-file, and only pass one argument to delete-directory.
(mh-edit-again, mh-send-sub): Use mh-bare-components instead of
mh-find-components (partially closes SF #468).
Spelling fix.
Fix creation of frames on MS-Windows: don't cons Lisp objects in input thread.

 src/w32fns.c (w32_createwindow): Accept an additional argument, an
 array of 2 values specifying the coordinates of the frame's
 top-left corner.  Use these values instead of calling x_get_arg,
 which can cons Lisp objects, and therefore cannot be called except
 from the main thread.  Remove redundant tests for the default
 values.
 (my_create_window): Move the calculation of the coordinates of the
 frame's top-left edge here.  Pass them to the input thread via the
 second parameter of the WM_EMACS_CREATEWINDOW message.  See
 http://lists.gnu.org/archive/html/emacs-devel/2014-09/msg00892.html
 for the details.
* internals.texi (Stack-allocated Objects): Further improvements.

Give an example of misuse.
* alloc.c: Remove now-unnecessary check.

Suggested by Dmitry Antipov in:
http://lists.gnu.org/archive/html/emacs-devel/2014-09/msg00891.html
* lisp/progmodes/python.el (python-fill-paren): Don't inf-loop at EOB.
Merge from emacs-24
* dispnew.c (adjust_decode_mode_spec_buffer): Prefer ptrdiff_t

to ssize_t since we're not using ssize_t-related syscalls here.
Use AUTO_CONS instead of SCOPED_CONS, etc.

* doc/lispref/internals.texi (Stack-allocated Objects):
Adjust to match the revised, less error-prone macros.
* src/frame.h (AUTO_FRAME_ARG): Rename from FRAME_PARAMETER.
* src/lisp.h (AUTO_CONS): Rename from scoped_cons.
(AUTO_LIST1): Rename from scoped_list1.
(AUTO_LIST2): Rename from scoped_list2.
(AUTO_LIST3): Rename from scoped_list3.
(AUTO_LIST4): Rename from scoped_list4.
(AUTO_STRING): Rename from SCOPED_STRING.
* src/frame.h (AUTO_FRAME_ARG):
* src/lisp.h (AUTO_CONS, AUTO_LIST1, AUTO_LIST2, AUTO_LIST3)
(AUTO_LIST4, AUTO_STRING):
Prepend a new argument 'name'.
Declare a variable instead of yielding a value.
All uses changed.
* src/lisp.h (STACK_CONS, AUTO_CONS_EXPR): New internal macros.