xbox360: don't put paths in CC/CXX/LD

Makefile.libretro

@@ -432,21 +432,24 @@ PSS_STYLE :=2
 CFLAGS   += -D_XBOX -D_XBOX1
 CXXFLAGS += -D_XBOX -D_XBOX1
 STATIC_LINKING=1
+
 # Windows MSVC 2010 Xbox 360
 else ifeq ($(platform), xbox360_msvc2010)
 TARGET := $(TARGET_NAME)_libretro_xdk360.lib
-MSVCBINDIRPREFIX = $(XEDK)/bin/win32
-CC  = "$(MSVCBINDIRPREFIX)/cl.exe"
-CXX  = "$(MSVCBINDIRPREFIX)/cl.exe"
-LD   = "$(MSVCBINDIRPREFIX)/lib.exe"
+CC  = "cl.exe"
+CXX  = "cl.exe"
+LD   = "lib.exe"
 
 export INCLUDE := $(XEDK)/include/xbox
 export LIB := $(XEDK)/lib/xbox
+PATH := $(shell IFS=$$'\n'; cygpath -w "$(XEDK)/bin/win32"):$(PATH)
+
 PSS_STYLE :=2
 CFLAGS   += -D_XBOX -D_XBOX360
 CXXFLAGS += -D_XBOX -D_XBOX360
 ENDIANNESS_DEFINES += -DMSB_FIRST
 STATIC_LINKING=1
+
 # Windows MSVC 2005 x86
 else ifeq ($(platform), windows_msvc2005_x86)
 	CC  = cl.exe
@@ -466,6 +469,7 @@ TARGET := $(TARGET_NAME)_libretro.dll
 PSS_STYLE :=2
 LDFLAGS += -DLL
 CFLAGS += -D_CRT_SECURE_NO_DEPRECATE
+
 # Windows MSVC 2003 x86
 else ifeq ($(platform), windows_msvc2003_x86)
 	CC  = cl.exe
@@ -485,6 +489,7 @@ TARGET := $(TARGET_NAME)_libretro.dll
 PSS_STYLE :=2
 LDFLAGS += -DLL
 CFLAGS += -D_CRT_SECURE_NO_DEPRECATE
+
 # Windows
 else
 	TARGET := $(TARGET_NAME)_libretro.dll