This adds a -P or --pid-path option to the command line which
allows the user to change the path and the name of the pid file created
when espeakup is running as a daemon.
I would like to thank Chris Brannon for the original idea for this.
The reason I went to autotools was the multiple sound systems, but since
we are now just using espeak's audio processing we can go back to a more
simple build system.
This adds support for a --default-voice or -V (upper case) command line
option which will set the default voice espeakup uses. This takes a
name of an espeak voice -- for example:
espeakup --default-voice=en-us
or
espeakup -V en-us
