wscript: Automatically disable SSE on platforms that don't support it (i.e. raspberry pi)

Closes: #213

wscript

@@ -38,6 +38,11 @@ def configure(conf):
     conf.env['LIB_PTHREAD'] = ['pthread']
     conf.env['LIB_DL'] = ['dl']
     conf.env['LIB_M'] = ['m']
+  
+    if Options.options.sse:
+	if os.system("grep -q '^flags.*sse' /proc/cpuinfo"):
+	   Options.options.sse = 0
+	   print "Processor lacks sse, disabling..."
 
     # NTK_EXTRA_FLAGS=''
     # if not Options.options.use_system_ntk: