[mono] raise mono versioning since ABI was broken
[mono] raise mono versioning since ABI was broken

The ABI of the mono bindings was broken, so we raise the version
of the assembly to make the ABI breakage detectable by binding
users.

neuschaefer/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,hyperair/libgpod,hyperair/libgpod,hyperair/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,hyperair/libgpod,hyperair/libgpod