This is more or less a temporary fix to restore the former behaviour. In
the long term objects will define a max value, which will be of use for
all kinds of meters.
Added support for X alignment across multi-lined objects (i.e., using
$alignr with $exec). This may be a bit buggy. Disabled OpenMP code
until GCC's implementation stabilizes (it's causing too many problems).
A couple Lua API changes.
See docs for more details on 'temperature gradients', which can be
turned on with the -t switch on graphs. Also improved parsing of
options with $execgraph and $execigraph, but may cause some breakage.
As a side effect, font and colour specific stuff got outsourced, too.
This is because the apropriate functions are used by conky.c as well as
specials.c, so they should be kept on their own.
In the long term I hope for positive impact on the X11 integration mess.
(Take e.g. the mass of X11 ifdefs cluttering conky.c.) Though this
commit contains no optimisations in this direction, just plain
outsourcing, to ensure minimised (intended: none) changes to conky's
interface behaviour.
