convert to gem, step 1
convert to gem, step 2
FIXED BUG, if relative path in $LOAD_PATH. like '.', '..'
mkexy: add rbw check
mkexy: check old exy file

  if has option -o exy, or if exists old exy file,
then save core, resource and path information and
restore into new exy file.
test: rename *.exy
testcase: create exe after chdir
test: use MiniTest replace Test::Unit
test: update outdate
example: update outdate
bump version
example: update outdate