First of a few commits to clean up the use of Boost Filesystem and support only VERSION 3 -- VERSION 2 is officially dropped from a Dakota support perspective. Compile errors WILL result if there's an attempt to compile Dakota against an older Boost installation that only supports BFSV2.
First of a few commits to clean up the use of Boost Filesystem and support only
VERSION 3 -- VERSION 2 is officially dropped from a Dakota support perspective.
Compile errors WILL result if there's an attempt to compile Dakota against
an older Boost installation that only supports BFSV2.

ToDo:
1.  Change the CMake logic so that the error is detected earlier (i.e. at "configure" time
rather than compile time)
2.  Additional conditional compilation cleanup, especially in WorkdirHelper mode, enforcing
BFS VERSION 3 only.



git-svn-id: c6750f7dd89925e309f580f56430152d063ff36c@1736 aa0779c3-6ec2-4b84-a212-a405c134cd8d

pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA