import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

media/libpng/arm.patch

@@ -0,0 +1,48 @@
+diff --git ../../../libpng-1.6.16/arm/arm_init.c arm/arm_init.c
+--- ../../../libpng-1.6.16/arm/arm_init.c	2014-12-21 22:08:08.000000000 -0500
++++ arm/arm_init.c	2014-12-22 17:33:57.556305506 -0500
+@@ -29,17 +29,17 @@
+  * You may set the macro PNG_ARM_NEON_FILE to the file name of file containing
+  * a fragment of C source code which defines the png_have_neon function.  There
+  * are a number of implementations in contrib/arm-neon, but the only one that
+  * has partial support is contrib/arm-neon/linux.c - a generic Linux
+  * implementation which reads /proc/cpufino.
+  */
+ #ifndef PNG_ARM_NEON_FILE
+ #  ifdef __linux__
+-#     define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
++#     define PNG_ARM_NEON_FILE "linux.c"
+ #  endif
+ #endif
+ 
+ #ifdef PNG_ARM_NEON_FILE
+ 
+ #include <signal.h> /* for sig_atomic_t */
+ static int png_have_neon(png_structp png_ptr);
+ #include PNG_ARM_NEON_FILE
+diff --git ../../../libpng-1.6.16/arm/filter_neon.S arm/filter_neon.S
+--- ../../../libpng-1.6.16/arm/filter_neon.S	2014-12-21 22:08:08.000000000 -0500
++++ arm/filter_neon.S	2014-12-22 17:43:31.588323649 -0500
+@@ -5,16 +5,22 @@
+  * Written by Mans Rullgard, 2011.
+  * Last changed in libpng 1.6.16 [December 22, 2014]
+  *
+  * This code is released under the libpng license.
+  * For conditions of distribution and use, see the disclaimer
+  * and license in png.h
+  */
+ 
++/* These are required because Mozilla's moz.build system doesn't pass
++ * -DDefined macros to the assembler.
++ */
++#define PNG_READ_SUPPORTED
++#define MOZ_PNG_HAVE_ARM_NEON
++
+ /* This is required to get the symbol renames, which are #defines, and the
+  * definitions (or not) of PNG_ARM_NEON_OPT and PNG_ARM_NEON_IMPLEMENTATION.
+  */
+ #define PNG_VERSION_INFO_ONLY
+ #include "../pngpriv.h"
+ 
+ #if defined(__linux__) && defined(__ELF__)
+ .section .note.GNU-stack,"",%progbits /* mark stack as non-executable */