Makefile: VegBIEN DB: public schema: Added schemas/rotate

bin/map: Fixed bug in input rows processed count where the count would be off by 1, because the for loop would leave i at the index of the last row instead of one-past-the-last

bin/map: Use the same XML tree for each row in DB outputs, to eliminate time spent creating the tree from the XPaths for each row

bin/map: map_table(): Resolve each prefix into a separate mapping, which is collision-eliminated, instead of resolving values from multiple prefixes when each individual row is mapped

bin/map: Moved collision-prevention code to map_rows() so it would only run if there were mappings, and so that it would run after any mappings preprocessing by map_table() that creates more collisions

bin/map: Prevent collisions if multiple inputs mapping to same output

mappings/DwC1-DwC2.specimens.csv: Mapped collectorNumber and recordNumber to recordNumber with _alt so they wouldn't collide when every input column, even empty ones, are created in the XML tree

bin/map: If out_is_db, in debug mode, print each row's XML tree and each value that it's putting

bin/map: If out_is_db, in debug mode, print the template XML tree used to insert a sample row into the DB

bin/map: map_table(): When translating mappings to column indexes, use appends to a new list instead of deletions from an existing list to simplify the algorithm