This patch does the following:
- adds pkg instructions to 6.3. Installing Xorg
- adds a Caveats section to 6.4. Xorg Configuration
- temporarily moves the extra config stuff to a new section called 6.8. Troubleshooting--this text has not yet been reviewed and this section may end up being instead called 6.8. Advanced Configuration or shuffled elsewhere in a subsequent patch
- replaces instances of X and X11 with the entity for xorg
- some updates to Synopsis, there will be more updates as the chapter is reviewed and shuffled
Approved by: bcr (mentor)