scossu/lsup_rdf: C and Python RDF library. ALPHA

Stefano Cossu 2f21e191e9 Remove unused ext folders.		2 lat temu
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hashmap @ d9b23a5a4d	01b3950720 Fix Python library; remove redundant dependencies.	2 lat temu
log @ f9ea34994b	97efe37987 Update some submodlues.	2 lat temu
sqlite	ad06c46d4e Use local lemon parser.	2 lat temu
tpl @ f8138ad393	ad70c8c905 Re-added log and tpl subprojects.	3 lat temu
uuid4 @ 14186f90f7	2c32f4ae91 Move boolean operations from keyset to graph.	4 lat temu