Initial version of ignore file.
Updated configure script to match latest .ac file.
Added new "rtoffset" command which allows you to start your score at any arbitrary time point.  All processing that would have happened prior to the offset point still happens, so you will get the correct audio output.
Merge pull request #2 from RTcmix/recent-dev-work

Changes to fix compiler grumbling, and adding new "rtoffset" command.