WTF Mate? The files output by yacc have changed again!
WTF Mate? The files output by yacc have changed again!

* A couple of months ago OSX did something completely different to all variants
of Linux we support. So, I spent a great deal of time setting up conditional
compilation to make libwcl compile on Mac.

* Today libwcl wouldn't compile, because the conditional build was wrong. It's
changed where generated yacc files get put!

WearableComputerLab/LibWCL,WearableComputerLab/LibWCL,WearableComputerLab/LibWCL,WearableComputerLab/LibWCL