scons: Don't build loader on Windows.

EGL was the last user.

Reviewed-by: Brian Paul <brianp@vmware.com>

src/SConscript

@@ -12,7 +12,8 @@ if env['hostonly']:
     # compilation
     Return()
 
-SConscript('loader/SConscript')
+if env['platform'] != 'windows':
+    SConscript('loader/SConscript')
 
 # When env['gles'] is set, the targets defined in mapi/glapi/SConscript are not
 # used.  libgl-xlib and libgl-gdi adapt themselves to use the targets defined

src/loader/Makefile.am

@@ -30,7 +30,6 @@ libloader_la_CPPFLAGS = \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/src \
 	$(VISIBILITY_CFLAGS) \
-	$(MSVC2013_COMPAT_CFLAGS) \
 	$(LIBUDEV_CFLAGS)
 
 libloader_la_SOURCES = $(LOADER_C_FILES)