Update MIPS toolchain to GCC 4.9.4 and binutils 2.26.1, update configure

Change-Id: I4d3dad4521bdf0b0d6ee5d1635ddbf57483d2b42

tools/configure

@@ -577,7 +577,7 @@ mipselcc () {
  GCCOPTS="$GCCOPTS -ffunction-sections -msoft-float -G 0 -Wno-parentheses"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="little"
- gccchoice="4.1.2"
+ gccchoice="4.9.4"
 }
 
 maemocc () {

tools/rockboxdev.sh

@@ -730,12 +730,8 @@ do
             ;;
 
         [Ii])
-            build "binutils" "mipsel-elf" "2.17" "" "--disable-werror"
-            patch=""
-            if [ "$system" = "Interix" ]; then
-                patch="gcc-4.1.2-interix.diff"
-            fi
-            build "gcc" "mipsel-elf" "4.1.2" "$patch"
+            build "binutils" "mipsel-elf" "2.26.1" "" "--disable-werror"
+            build "gcc" "mipsel-elf" "4.9.4" "" "" "gmp mpfr mpc"
             ;;
 
         [Mm])