gcc-4.6: Switch to using svn SRC_URI for recipe

We call the recipes 4.6
Remove the backport patches

(From OE-Core rev: 68b545f4ff719f2b6e57d68b002dc9845c7a14ae)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-4.6/arm-nolibfloat.patch

@@ -0,0 +1,26 @@
+Upstream-Status: Pending
+
+# Dimitry Andric <dimitry@andric.com>, 2004-05-01
+#
+# * Removed the extra -lfloat option from LIBGCC_SPEC, since it isn't needed
+#   anymore.  (The required functions are now in libgcc.)
+# 
+# Fixes errors like
+# arm-softfloat-linux-gnu/3.4.0/../../../../arm-softfloat-linux-gnu/bin/ld: cannot find -lfloat
+# collect2: ld returned 1 exit status
+# make[2]: *** [arm-softfloat-linux-gnu/gcc-3.4.0-glibc-2.3.2/build-glibc/iconvdata/ISO8859-1.so] Error 1
+# when building glibc-2.3.3 with gcc-3.4.0 for arm-softfloat
+
+Index: gcc-4.6.0/gcc/config/arm/linux-elf.h
+===================================================================
+--- gcc-4.6.0.orig/gcc/config/arm/linux-elf.h
++++ gcc-4.6.0/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"
+