- fix target_examine declaration

- remove build warnings
- added --enable-gccwarnings to docs
- update mips_m4k_examine function

git-svn-id: svn://svn.berlios.de/openocd/trunk@893 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/jtag.c

@@ -1316,7 +1316,7 @@ void jtag_sleep(u32 us)
 
 /* Try to examine chain layout according to IEEE 1149.1 §12
  */
-int jtag_examine_chain()
+int jtag_examine_chain(void)
 {
 	jtag_device_t *device = jtag_devices;
 	scan_field_t field;