gcc: Build gcc version 4.8.3, refresh patches from openwrt.git.

Signed-off-by: Christian Beier <dontmind@freeshell.org>

devel/gcc/patches/810-arm-softfloat-libgcc.patch

@@ -1,26 +1,25 @@
---- a/gcc/config/arm/linux-elf.h
-+++ b/gcc/config/arm/linux-elf.h
-@@ -60,7 +60,7 @@
-    %{shared:-lc} \
-    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
- 
--#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
-+#define LIBGCC_SPEC "-lgcc"
- 
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
- 
---- a/gcc/config/arm/t-linux
-+++ b/gcc/config/arm/t-linux
-@@ -23,7 +23,11 @@ TARGET_LIBGCC2_CFLAGS = -fomit-frame-poi
- 
- LIB1ASMSRC = arm/lib1funcs.asm
+--- a/libgcc/config/arm/t-linux
++++ b/libgcc/config/arm/t-linux
+@@ -1,6 +1,10 @@
+ LIB1ASMSRC = arm/lib1funcs.S
  LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
--	_arm_addsubdf3 _arm_addsubsf3
-+	_arm_addsubdf3 _arm_addsubsf3 \
+-	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
++	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
 +	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
 +	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
 +	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
 +	_arm_fixsfsi _arm_fixunssfsi
  
- # MULTILIB_OPTIONS = mhard-float/msoft-float
- # MULTILIB_DIRNAMES = hard-float soft-float
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference.
+--- a/gcc/config/arm/linux-elf.h
++++ b/gcc/config/arm/linux-elf.h
+@@ -55,8 +55,6 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
+-
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*} \