[xmlroff] 'border-color' property

[Tony G. <Ton...@Su...>]

When the X11 colours took longer than expected, I used the remaining
time on the weekend to implement 'border-color' rather than work on
external graphics (unfortunately).

I implemented the property, but haven't hooked it into the property
resolution code.

If someone wants to test their knowledge of the source code, they
could look at what I did (starting with the 'spec-dump' module) to see
how well they understand what I did and why.  For the really
adventurous, they can look at fo-context-util and see what would need
to be done to support it similarly to how the 'padding' property
is resolved w.r.t. the non-shorthand 'padding-*' properties.

For the less adventurous and less source-code-inclined, we'll need
test case FO files for testing 'border-color' once it's fully
implemented.  Any volunteers?

Feel free to ask questions about any if this if you need to.

Regards,


Tony.