My new relaxng parser pass now all tests !

UnitTest'O'Meter
schema parsing document validation
passed tests 373 (100%) 419 (79%)
failed tests 0 (-39) 110 (-0)
total 373 529

(Previous status).

I'm going to finish the validation part and will make certainly little optimizations (for the moment, all tests take 27.7 seconds on my PC).