Start implementing the long task of DoLAYOUT to process the big "meat" of a KLC file...

Start implementing the long task of DoLAYOUT to process the big "meat" of a KLC file: the keyboard layout. Implement the table of recognized virtual keys (and the translation matrix). Add support for hex-entered keys (0x...).
The tool does some minimal error checking for now, and attempts to begin parsing the LAYOUT section, but fails miserably and the code won't execute unless you've enabled verbose mode. I'm just using this commit as a checkpoint for now.
Also fixed SCVK structure to use the last member as a state flag.
Finally, added definitions for LAYOUTENTRY which will keep track of each row's column's values in the LAYOUT.

svn path=/trunk/; revision=43944