This attempts to improve on the fix for Bug#22202.
* configure.ac (HAVE_DEV_URANDOM): Remove.
Check /dev/urandom existence at run time, not at build time,
since the device could exist in the former but not the latter.
* src/sysdep.c [HAVE_GNUTLS]: Include gnutls/gnutls.h.
(gnutls_rnd) [GNUTLS_VERSION_NUMBER < 0x020c00]: New fallback macro.
(random_seed): New typedef.
(set_random_seed): New static function.
(seed_random): Use them.
(init_random): Use random_seed instead of uintmax_t, so as to
not consume more entropy than needed. Prefer gnutls_rnd if it
works; this avoids a redundant open of /dev/urandom on
GNU/Linux with modern GnuTLS.
* doc/lispref/loading.texi (How Programs Do Loading): Update the
description of searching for files in 'load' when Emacs was built
with support for dynamic modules.
* doc/lispref/frames.texi (Window System Selections): Rename "x-*"
functions into the corresponding "gui-*" functions. Make the
description slightly less X-centric.
* src/w32.c <multiByteToWideCharFlags>: New global variable.
(filename_to_utf16, filename_from_ansi, check_windows_init_file):
Use it instead of the literal MB_ERR_INVALID_CHARS.
(maybe_load_unicows_dll): Initialize multiByteToWideCharFlags as
appropriate for the underlying OS version. For details, see
http://lists.gnu.org/archive/html/emacs-devel/2016-01/msg00835.html.
* src/w32.h: Declare multiByteToWideCharFlags.
* src/w32fns.c (Fx_file_dialog, Fw32_shell_execute)
(add_tray_notification): Use multiByteToWideCharFlags instead of
the literal MB_ERR_INVALID_CHARS.
(_resetstkoflw_proc): New typedef.
(w32_reset_stack_overflow_guard): Call _resetstkoflw via a
pointer, as this function is absent in msvcrt.dll shipped with W2K
and older systems.
Copyright-paperwork-exempt: yes
* src/w32heap.c (init_heap): Redirect malloc, realloc, and free to
special functions on Windows 9X. Refuse to dump Emacs on Windows 9X.
(malloc_after_dump_9x, realloc_after_dump_9x)
(free_after_dump_9x): New functions. (Bug#22379) See also
http://lists.gnu.org/archive/html/emacs-devel/2016-01/msg00852.html
for more details about the original problem.
* nt/inc/ms-w32.h (malloc_after_dump_9x, realloc_after_dump_9x)
(free_after_dump_9x): Add prototypes.
Copyright-paperwork-exempt: yes
* lisp/progmodes/hideif.el (hif-evaluate-macro, hide-ifdef-block): Use
'use-region-p' to test whether to operate on region, instead of
testing 'mark-active'.
* lisp/progmodes/hideif.el (hif-evaluate-macro)
(hide-ifdef-undef, show-ifdef-block): Don't use '(interactive "r")'
in commands that should only act on the region if it's active.
* lisp/progmodes/cc-engine.el (c-back-over-member-initializers): Check
more robustly for ":" token when searching backwards for it.
* lisp/progmodes/cc-langs (c-:$-multichar-token-regexp): New language
variable.
This fixes bug #22369.
* lisp/newcomment.el (comment-make-bol-ws): New function.
(comment-make-extra-lines): Use new function instead of a crude `make-string'.
* configure.ac: Check for "/dev/urandom".
* src/sysdep.c (init_random) [HAVE_DEV_URANDOM]: Read the stream
for the seed from "/dev/urandom".
[WINDOWSNT]: Obtain the stream for the seed from w32 APIs.
* src/fns.c (Frandom): Update the doc string to indicate that
system entropy is used when available.
* src/w32.c: Include wincrypt.h.
(w32_init_crypt_random, w32_init_random): New functions, use the
CryptGenRandom API.
(globals_of_w32): Initialize w32_crypto_hprov handle to zero.
* src/w32.h (w32_init_random): Add prototype.
* doc/lispref/numbers.texi (Random Numbers): Document more details
about 't' as the argument to 'random'.
* etc/NEWS: Mention that '(random t)' now uses a cryptographically
strong seed if possible.
(Bug#22202)
* lisp/textmodes/picture.el (picture-insert): Check the width of
the character being replaced, not just that of the replacement.
(Bug#1808)
Copyright-paperwork-exempt: yes
* lisp/textmodes/css-mode.el (css--font-lock-keywords): Disallow
parenthesis in selectors except for in the function notation that
might appear right after a pseudo-class.
* test/indent/scss-mode.scss: Add a test for it.
* doc/lispref/text.texi (Special Properties): Document the new
properties 'cursor-intangible' and 'cursor-sensor-functions'.
Document the obsolete status of 'intangible', 'pointer-left',
and 'point-entered' properties, and of 'inhibit-point-motion-hooks'.
* doc/lispref/display.texi (Overlay Properties): Document that
'intangible' overlay property is obsolete.
* lisp/emacs-lisp/cursor-sensor.el (cursor-sensor-mode): Doc fix.
