+ \retval 1 path is absolute
+ \retval 0 path is relative
+*/
+YAZ_EXPORT int yaz_is_abspath(const char *path);
+
+/** \brief get next path component in filepath
+ \param path_p pointer to path (updated to "next" entry if any)
+ \param comp upon pointer to component (if component is found)
+ \retval 0 no component found (and no more componennts)
+ \retval >0 length of component (length of *comp)
+
+ A filepath has components separted by colon. For example
+ /usr/lib/modules:c:/my:/:lib
+ which has these components
+ "/usr/lib/modules", "c:/my", "/", "lib"