cmake and versioned libraries

[Brad King]

Benjamin Reed wrote:
> Is there any way to get cmake to build libraries in osx versioning style?
> 
> linux and presumably others use the form:
>   libfoo.so.1.0.0
> 
> whereas osx uses:
>   libfoo.1.0.0.dylib
> 
> it doesn't really hurt anything, but the other form is preferable.

I've changed CMake to just always follow this convention.  One of the 
design principles of CMake is to try to do the "native thing" on each 
platform.  We'll include the fix in 2.4.3.

-Brad