h5edit

Problem: the lex scanner did not cover whitespaces (space, TAB, newline)
correctly, ended up "leaking" them to output.

Solution: Added scan case to ignore whitespaces. Also added a catchall in case
some input is not covered.

The expected output files used to contain spaces.  All changed to empty files
because nothing should be leaked any more. These files should be replaced by
a single empty file later.

Tested: jam, koala, heiwa, linew.