* Fix CMake macro create_bzr_version_header to always update version.h file whenever a repo change
is found. Running `make rebuild_cache is no longer required.
* Add new CMake function for writing version.h file.
* Always use version.h file for build version string instead of meaningless hard coded date.
* Only use bzr version string when build version is not defined at configuration time for stable release
version strings.
* Minor cleanup of FindBazaar.cmake.
* Remove unnecessary version.h.cmake file.
Wayne Stambaugh