[Cmake] stripping repeated link directories and libraries from each makefile.

[Ian Scott]

I am considering
1) reducing the library link directories list in each cmMakefile to a list
of unique directories before output to the dsp file.
2) reducing the library list in each cmMakefile to a twice repeated list of
unique libraries before output to the dsp file.
A small experiment suggests that both the number of link directories and
number of linked libraries in each dsp file has a significant effect on the
project loading time in MSVC++.

Whilst I can't see any problem with going ahead with 1, other's may find the
current full list of libraries to be useful.

Any comments?

Ian.