Move split() to OSUtils since it is not used in core.

osdep/OSUtils.hpp

@@ -236,6 +236,17 @@ public:
 	 */
 	static bool writeFile(const char *path,const void *buf,unsigned int len);
 
+	/**
+	 * Split a string by delimiter, with optional escape and quote characters
+	 *
+	 * @param s String to split
+	 * @param sep One or more separators
+	 * @param esc Zero or more escape characters
+	 * @param quot Zero or more quote characters
+	 * @return Vector of tokens
+	 */
+	static std::vector<std::string> split(const char *s,const char *const sep,const char *esc,const char *quot);
+
 	/**
 	 * Write a block of data to disk, replacing any current file contents
 	 *