Cleaned up command-line parsing. Added option -n to disable target power.

- f32x/c2-ben.c: removed #include <stdio.h> left over from debugging
- f32x/f32x.c (main): command-line parsing now uses getopt() and is done
  before trying to talk to the target
- f32x/c2-drv.h (c2_ops), f32x/c2.h (c2_init), f32x/c2.c (c2_init),
  f32x/c2-om.c (om_init): pass "power" argument along the init call chain
- f32x/c2-ben.c (ben_init): added target power switching
- f32x/f32x.c (usage, main): new option -n to disable target power

f32x/c2-om.c

@@ -27,7 +27,7 @@
 #include "c2-bitbang.c"
 
 
-static void om_init(void)
+static void om_init(int power)
 {
 	gpio_init();
 	c2_init();