[build] Enable building with the Intel C compiler (icc)

src/libgcc/icc.c

@@ -0,0 +1,8 @@
+/*
+ * Intel's compiler creates an implicit call to this function at the
+ * start of main().
+ *
+ */
+void __attribute__ (( cdecl )) __intel_new_proc_init ( void ) {
+	/* Do nothing */
+}