Adding some test cases for the pre-processor. (Total hack, requires copying and pasting code from the actual app source into another file and running a shell script, but it's better than nothing.)

app/preproc/test/data/foo5.cpp

@@ -0,0 +1,16 @@
+void setup()			
+{
+}
+
+void loop()			  
+{
+   char cmd[16];
+   int pin;
+   pin = atoi(&cmd[1]); 
+} 
+
+/*
+// convert string to numeric value
+int atoi(char *array) {
+}
+*/