Add buildroot support for binutils-2.22 and gcc-4.6.3; all buildroot tools are not called abc-nuttx-elf instead of abc-elf

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5213 42af7a65-404d-4744-a932-0658087f49c3

configs/fire-stm32v2/nsh/Make.defs

@@ -82,8 +82,8 @@ ifeq ($(CONFIG_STM32_RAISONANCE),y)
 endif
 ifeq ($(CONFIG_STM32_BUILDROOT),y)
   # NuttX buildroot under Linux or Cygwin
-  CROSSDEV = arm-elf-
-  ARCROSSDEV = arm-elf-
+  CROSSDEV = arm-nuttx-elf-
+  ARCROSSDEV = arm-nuttx-elf-
   ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
   MAXOPTIMIZATION = -Os
 endif
@@ -153,7 +153,7 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT =
 
-ifneq ($(CROSSDEV),arm-elf-)
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)