Encapsulate jtag_reset_config using accessors:

- Update handle_reset_config_command in tcl.c to use new helpers.
- Replace direct accesses in JTAG interface and target drivers.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2161 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/jtag.h

@@ -277,7 +277,8 @@ enum reset_types {
 	RESET_SRST_PUSH_PULL  = 0x20,
 };
 
-extern enum reset_types jtag_reset_config;
+enum reset_types jtag_get_reset_config(void);
+void jtag_set_reset_config(enum reset_types type);
 
 /**
  * Initialize interface upon startup.  Return a successful no-op upon