Bourne shellized lfetool v0.3.2

* Removed Bashism, for example
Used _ instead of - in function names.
Used ` > /dev/null 2>&1` instead of `&> /dev/null`.
Used backtick instead of `$(...)`.
Used `[ x"$VAR" = x ]` instead of `[ "$VAR" = "" ]`.

* Used explicit and plain text for embedded scripts. Fonts are still base64 encoded.
I prefer plain text. I think megabytes download is not burden today's network.
gzipped/encoded source code may make other developer's contribution difficult.

* Tweaked some functions to run in Cygwin. Tested functions are `lfetool install lfetool`, `lfetool new library proj1`, `lfetool repl lfe`, `lfttool repl erlang`.
Have not tested it in Linux, but it should run well as it runs much poor cygwin env.