Move string utils section in common.h

Actually, it should probably live in a separate file,
but that can wait for a while.

src-disl-agent/common.h

@@ -74,30 +74,6 @@ int find_value_index (const char * strval, const char * values [], int nvals);
 void die_with_error (const char * format, va_list args);
 void die_with_std_error (int errnum, const char * format, va_list args);
 
-// ****************************************************************************
-// STRING UTILS SECTION
-// ****************************************************************************
-
-/**
- * Count the occurrences of substr in string
- * @param string
- * @param substr
- * @return
- */
-size_t
-substr_count(const char * string, const char * restrict substr);
-
-/**
- * Split the string into tokens
- * Remember to free the result.
- *
- * @param string The string to split
- * @param separator
- * @param tokens Pointer to the size_t variable to store the number of tokens
- * @return
- */
-char **
-split_string(char * string, const char * restrict separator, size_t * tokens);
 
 /**
  * Reports a general error and terminates the program if the provided
@@ -144,6 +120,33 @@ warn_std_error (bool error, const char * message) {
 	}
 }
 
+
+// ****************************************************************************
+// STRING UTILS SECTION
+// ****************************************************************************
+
+/**
+ * Count the occurrences of substr in string
+ * @param string
+ * @param substr
+ * @return
+ */
+size_t
+substr_count(const char * string, const char * restrict substr);
+
+
+/**
+ * Split the string into tokens
+ * Remember to free the result.
+ *
+ * @param string The string to split
+ * @param separator
+ * @param tokens Pointer to the size_t variable to store the number of tokens
+ * @return
+ */
+char **
+split_string(char * string, const char * restrict separator, size_t * tokens);
+
 //
 
 #ifdef MINGW