Allowing paths in use_module(library(..)) (#604)

In a module, the path is restricted in being an atom.

src/lib/tabling.pl

@@ -8,12 +8,12 @@
 	    op(1150, fx, table)
 	  ]).
 
-:- use_module('tabling/double_linked_list').
-:- use_module('tabling/table_data_structure').
-:- use_module('tabling/batched_worklist').
-:- use_module('tabling/wrapper').
-:- use_module('tabling/global_worklist').
-:- use_module('tabling/table_link_manager').
+:- use_module(library('tabling/double_linked_list')).
+:- use_module(library('tabling/table_data_structure')).
+:- use_module(library('tabling/batched_worklist')).
+:- use_module(library('tabling/wrapper')).
+:- use_module(library('tabling/global_worklist')).
+:- use_module(library('tabling/table_link_manager')).
 
 :- use_module(library(cont)).
 :- use_module(library(lists)).

src/lib/tabling/batched_worklist.pl

@@ -45,8 +45,8 @@
 	    wkl_worklist_work_done/1			% +WorkList
 	  ]).
 
-:- use_module(global_worklist).
-:- use_module(double_linked_list).
+:- use_module(library('tabling/global_worklist')).
+:- use_module(library('tabling/double_linked_list')).
 
 :- use_module(library(atts)).
 :- use_module(library(lists)).

src/lib/tabling/table_data_structure.pl

@@ -15,8 +15,8 @@
 	    get_nb_identifiers/3                % +Table, -NbWorklistID, -NbAnswerTreeID
 	  ]).
 
-:- use_module(table_link_manager).
-:- use_module(trie).
+:- use_module(library('tabling/table_link_manager')).
+:- use_module(library('tabling/trie')).
 
 /*  Part of SWI-Prolog
 
@@ -53,7 +53,7 @@
     POSSIBILITY OF SUCH DAMAGE.
 */
 
-:- use_module(batched_worklist).
+:- use_module(library('tabling/batched_worklist')).
 
 :- use_module(library(atts)).
 :- use_module(library(gensym)).

src/lib/tabling/table_link_manager.pl

@@ -47,7 +47,7 @@
 :- use_module(library(iso_ext)).
 :- use_module(library(terms)).
 
-:- use_module(trie).
+:- use_module(library('tabling/trie')).
 
 :- attribute trie_table_link/1.