Add functions to list of exported functions

Additionally export the following fuctions (to make trab_config build again):
- simple_strtol()
- strcmp()

Also bump the ABI version to reflect this change

Signed-off-by: Martin Krause <martin.krause@tqs.de>

include/exports.h

@@ -23,6 +23,8 @@ void do_reset (void);
 unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base);
 char *getenv (char *name);
 void setenv (char *varname, char *varvalue);
+long simple_strtol(const char *cp,char **endp,unsigned int base);
+int strcmp(const char * cs,const char * ct);
 #if defined(CONFIG_CMD_I2C)
 int i2c_write (uchar, uint, int , uchar* , int);
 int i2c_read (uchar, uint, int , uchar* , int);
@@ -40,7 +42,7 @@ enum {
 	XF_MAX
 };
 
-#define XF_VERSION	3
+#define XF_VERSION	4
 
 #if defined(CONFIG_I386)
 extern gd_t *global_data;