General robustness improvements in installation script: (1) more consistent setting

of the subshell environment variables (CMAKE, MPIFC, etc., are now setin every
branch of the main conditional blocks in the find_or_install function in install.sh),
(2) Expanded/renamed query options for the 'install_prerequisites/build' script:
--query-path and --query-version now work, (3) now setting each minimum version based
on the 'build' script's response to --query-path to keep 'install.sh' and 'build' in
sync, (4) beginnings of lossless stack management stack_pop from dependency stack results
in stack_push onto script_installed in some places.

Signed-off-by: Damian Rouson <[email protected]>

Author: rouson