Add main.c test

webserver/main.c

+#include <stdio.h>
+#include <string.h>
+int main(int argc, char **argv)
+{
+/* Arnold Robbins in the LJ of February '95, describing RCS */
+if (argc > 1 && strcmp(argv[1], "-advice") == 0) {
+printf("Don't Panic!\n");
+return 42;
+}
+printf("Need an advice?\n");
+return 0;
+}
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