Remove iterated debugs (eg. over FFOO_INIGREP_PATH) and those appearing
as arguments

Seems to be more readable and shows ~15% better performance on full
suite run.

So that it's easier to check if we are using the right SUT in case it's
both installed and deployed in temporary test dir.

If user does not provide mandatory parameter, `shift 2` will fail but
will not shift anything, resulting in infinite loop.

Fixes issue when empty string generated warning.  Correct behavior is
that empty string does return with non-zero but does not issue warning
as this is to be commonly used to set default values.

 *  Do not split text per line,
 *  use `<pre/>` for main text,
 *  use `<span />` for debug headers,
 *  and use more suitable class names.

Not sure why I did it in the first place.

This disables user from choosing different mode; behave as other
printers.

/dev/stdin will be treated as normal file, albeit `test -s` would detect
it as non-existent.  '-' will cause STDIN to be used as wellm but will
omit header.

exit does not work as we want in subshell, so we need to exit higher.

Introduced by fefce4a0, typo invalidated catfun and ffdoc

In mkit's world, last change before release (ie. the commit that gets
tagged) must be nothing but version bump in "config.mk"

Other checks that rely on version number that is derived from this tag
would then give weird messages.

A first version that is versioned

IOW, it's not guaranteed that once we are in git repo we can always see
the tag.  VERSION should be reliable, though.

So that one can still build without having it set properly.