new getter functions: rasqal_graph_pattern_get_triples, rasqal_literal_get_type, rasqal_literal_get_language

[cosminbasca]

I've created 3 new simplistic getters for accessing private members of the rasqal_literal and rasqal_graph_pattern structs. The rasqal_graph_pattern_get_triples creates a new raptor_sequence containing only the triples of the graph pattern, or NULL if no triple patterns are contained in the respective graph pattern. The functions pertinent to the rasqal_literal struct are exposing the type and language members with minimal checks.

[dajobe]

This looks good but you need to undo the changes to the sgml files - they aren't correct and I can do those for the new functions automatically.

Adding new functions also needs updating the docs pointers in docs/*tsv and the sections files - which I generally do - but if you want to have a go at that, feel free.

[cosminbasca]

I think the sgml files were automatically modified when I ran autogen.sh. I will revert the sgml files. I would rather have you modify the documentation pointers since I am less experienced with the build / release system used in rasqal rasqal than you :). Thanks!

[dajobe]

code style. I'd move 'int i;' to here at the start of this block. it doesn't need setting to 0 either since it's initialized below.

[cosminbasca]

true, sounds good