Various fixes for windows build

* Fix location of windows_resources.rc, broken in build system
  rearrangement

* Kill off a bunch of warnings about conversion from size_t to
  integer types

* Fix header include for embedded GLEW
Fix package versioning broken in build refactor

displazVersion is used in the main CMakeLists.txt, and must be set up
there.
Fix windows bundle fixup for packaging

fixup_bundle() needs to run strictly after the associated executable
is installed.  To ensure this, move it to after the install command
in the src sub directory.