[jhc] install log, suggestions

[Mark Wotton]

some quick notes on the experience of installing on shae's bladeserver

- configure doesn't check for DrIFT (also check for other libs)
- jhc/src/Doc doesn't exist in a clean install, I had to install a  
symlink from jhc/doc
- jhc won't use multiple cores to build libs? might be a  
misunderstanding on my part.

also, I've been thinking about a continuous integration server, both  
for JHC and for other projects. Shae's volunteered his machine, and  
I'm happy to set up a continuous integration environment, but I wanted  
to make sure that I wasn't duplicating work - have you got one already?

Cheers
Mark