* Threading fixes (corrections to condition usage)
* Avoid a potential hang when faced with some peculiar stretch factors
* More modular calls out to vectorizable functions
* Solaris build fixes
* Bump version number
* Added an initial "formant preservation" option when pitch shifting
* Real-time pitch shifting now uses a faster method by default, with
less variation in CPU usage
* The code is more amenable to compiler auto-vectorization (through
e.g. gcc --ftree-vectorize).
