[NOP] IndexSa: debug stuff
[INTERNAL] IndexSa: used FibreXXX instead of EsaXXX
[FIX, INTERNAL] IndexSa: implemented new goUp() behavior - added repLen to history
[FIX] IndexSa: check empty pattern in goDown(string)
[FIX] IndexSa: always push history such that to any (un)successful goDown() corresponds a goUp()
Merge pull request #341 from esiragusa/fix/sa

Fix IndexSA VSTree Iterator