* Erase option to remove the encoded status of the tracks

* Remove awk calls and set our own shell functions to do the same job
* Modified the starting track so that it resets the numbers: 2-9 names the files 1-8
* Added METAFLACOPTS
* Some checks for STARTTRACKNUMBER
* Use FIRSTTRACK and LASTTRACK in some functions.

git-svn-id: http://abcde.googlecode.com/svn/trunk@68 a0fa61bc-5347-0410-a1a9-7f54aa4e1825