Changed bochsrc parser order and cleanup
- moved some options to the top and some legacy ones to the end of the function
- added some info to the legacy keyboard options
- removed 'text_snapshot_check' keyword
- some coding style changes


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11744 6c8e4198-a580-4521-a02f-c9ae86df1db9