[ghemical-devel] ghemical/libghemical works again, +some improvements

[Tommi Hassinen]

Hello.

Now the two separate modules work again; one have to first compile and
install libghemical and then ghemical (logically :) ; the configure script
of ghemical is so far unable to find libghemical files and it is assumed
that they were installed with prefix=/usr/local (the default one).

I also added some new features:

	1) a new mouse tool "clipping" is added; it determines how "thick"
		slice of graphics is rendered (useful for macromolecules).
		The tool works the same way as the "zoom" one.

	2) selection my atoms/residues/chains/molecules works now, more
		or less (res/chn based one ignores hydrogens).

	3) a new function "delete selected atoms" was added.

Regards,

	Tommi