forestdb.lib: Fix file name for test db.
forestdb.lib: use returned length since strings dont seem to be null terminated.
FUEL: fix markup of stack effects of quotations nested in stack effects
FUEL: unit tests for fuel, only 2 so far but the number is expected to grow
FUEL: when browsing vocab documentation, use the fuel-help--buffer-link variable to determine what vocabulary we are "in"
fuel: get-vocabs word is redundant