* C-API: Added xpath_first_localonly() as an xpath function that skips prefix and namespace checks.

* Added experimental code for optizing XPath search using binary search.
  * Enable with XPATH_LIST_OPTIMIZE
* Changed `clicon_rpc_generate_error(msg, xerr)` to `clicon_rpc_generate_error(xerr, msg, arg)`

lib/src/clixon_xpath_parse.y

@@ -103,7 +103,6 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <errno.h>
-#include <assert.h>
 #include <ctype.h>
 #include <sys/types.h>
 #include <sys/socket.h>