Fix bug #18584 with assertion violations while scrolling.

 src/xdisp.c (move_it_by_lines): Call reseat_1 after moving the
 iterator backwards, to resync the bidi iterator.
* erc.el (erc-nick-at-point): Fix format-string typo (Bug#17755).
* configure.ac: Port to strict POSIX shells on non-MinGW.
* lisp/term/ns-win.el: Add functions to ns frame, not x frame.
* lisp/vc/vc-svn.el (vc-svn-after-dir-status): Fix the non-remote regexp,
similarly to Roger's 2010-06-12 change for the remote change.
New gui-selection-value consolidating x-selection-value.
* lisp/select.el (gui-selection-value-alist): New method.
(gui-selection-value): New function.
(x-selection-value): Make it an obsolete alias.
* lisp/simple.el (interprogram-paste-function): Default to gui-selection-value.
* lisp/w32-common-fns.el (w32-get-selection-value): Simplify.
(x-selection-value): Remove alias.
(interprogram-paste-function): Don't set.
(gui-selection-value): Define for w32.
* lisp/term/x-win.el (gui-selection-value): Define for x.
(x--selection-value): Rename from x--selection-value.
(interprogram-paste-function): Don't set.
* lisp/term/pc-win.el (w16-get-selection-value): Simplify.
(msdos-initialize-window-system): Don't set interprogram-paste-function.
(gui-selection-value): Define for pc.
* lisp/term/ns-win.el (x-selection-value): Remove.
(gui-selection-value): Define for ns, instead.
* lisp/term/common-win.el (x-setup-function-keys): Don't set
interprogram-paste-function.
* lisp/obsolete/mouse-sel.el (mouse-sel-get-selection-function):
Use gui-selection-value.
* lisp/select.el: Add commentary discussion.
Fix x-focus-frame bug with "Not an in-range integer".

* xselect.c (X_SHRT_MAX, X_SHRT_MIN, X_LONG_MAX, X_LONG_MIN)
(X_ULONG_MAX): Move these macros to xterm.h.
(x_fill_property_data): Be more generous about allowing either
signed or unsigned data of the appropriate width.
* xterm.h (x_display_set_last_user_time): New function.
All setters of last_user_time changd to use this function.
If ENABLE_CHECKING, check that the times are in range.
* font.c (font_list_entities): Do not add empty vector to font cache.
(font_matching_entity): Likewise.  If matching entity is found, insert
1-item vector with this entity instead of an entity itself (Bug#17125).
Consistently use min and max macros from lisp.h.
* coding.c (min, max):
* font.c (MAX):
* unexhp9k800.c (min):
* unexw32.c (min, max): Use definitions from lisp.h.
* regex.c (MAX, MIN) [!emacs]: Define own max and min as such.
Adjust users.
* gmalloc.c (min): Tiny style change.
* fileio.c (emacs_readlinkat, Finsert_file_contents):
* w32fns.c, xfns.c (x_create_tip_frame): Use AUTO_STRING.
Sync with Org 8.2.8.
Mention `frame-resize-pixelwise' to make frames truly fullscreen or maximized.

* frame.el (toggle-frame-maximized, toggle-frame-fullscreen):
In doc-string mention need of setting `frame-resize-pixelwise'.

* frames.texi (Frame Commands):
* cmdargs.texi (Window Size X): Mention the use of
`frame-resize-pixelwise' to make frames truly fullscreen or
maximized.

* frames.texi (Size Parameters, Size and Position): Mention that
with some window managers you have to set
`frame-resize-pixelwise' in order make a frame truly fullscreen
or maximized.
erc.el (erc-rename-buffers): Use defcustom instead of defvar.
Updating ERC documentation
doc/misc/erc.texi (Connecting): Remove stray "OA" that failed the manual build.
Fix vc-svn-ignore

* lisp/vc/vc-svn.el (vc-svn-ignore-completion-table): Implement.
(vc-svn-ignore): Use it.
A few tiny doc/ copyedits.
ChangeLog fixes
Merge from emacs-24; up to r117544