Cmake improvements
- Split setup of Boost and NetCDF into usmlBuildSetup.cmake
- Add config directory to CMake module path instead of copying into
  /use/shared/cmake directories.
- Create FindUSML.cmake routine for use my USML applications.
Update install instructions to reflect improvements
in installation process.
Allow USML to work with the Boost 1.41 that comes with CentOS.
Use the progress_timer from Boost 1.41 instead of auto_cpu_timer from 1.57.
Merge branch 'master' into cmake_improvements
Add boost-static to RPM instructions.
Add boost-static to RPM instructions.