Lily 2.7.31

[Han-Wen Nienhuys]

Lily 2.7.31 fixes a load of bugs, and has some internal cleanups.

* Exported C++ members are now named ly:class-name::function-name in 
Scheme instead of Class_name::function_name

* We are now using C++ vectors and strings instead of our own.

* The Linux/FreeBSD builds now include wrappers for Python scripts too, 
so you can run convert-ly and midi2ly.

--
 Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen