Rename the value string functions to be a bit mroe sensible

include/ucore/val_str.h

@@ -8,6 +8,7 @@ struct UCValStr {
     const char *str;
 };
 
+/** Helper macro to define an entry in a UCValStr array */
 #define UC_VS_ENTRY(constant) {constant, #constant}
 #define UC_VS_TERMINATOR {-1, NULL}
 
@@ -19,7 +20,7 @@ struct UCValStr {
  * @param array array to search
  * @return the string associated with @val or NULL
  */
-const char *uc_vs_search(unsigned int val, const struct UCValStr *array);
+const char *uc_val_2_str(unsigned int val, const struct UCValStr *array);
 
 /** Find @val in @array.
  * @array must be sorted on val and must not be empty
@@ -29,7 +30,7 @@ const char *uc_vs_search(unsigned int val, const struct UCValStr *array);
  * @param array array to search
  * @return the string associated with @val or NULL
  */
-const char *uc_vs_bsearch(unsigned int val, 
+const char *uc_val_2_str_bs(unsigned int val, 
                           const struct UCValStr *array,
                           size_t array_len);