Revert "NEW: com_solv.m & fuelprop.m"

This reverts commit d1bcad23c8745f34c0dfa8525aaaa5c9335ac8a9.
Revert "Revert "NEW: com_solv.m & fuelprop.m""

This reverts commit 21026e037f8642465b7cc878852e0c473f0cad44.
Revert "Revert "Revert "NEW: com_solv.m & fuelprop.m"""

This reverts commit 56890e94cc35a23df0b3200462a77a9413602838.
Revert "Revert "NEW: com_solv.m & fuelprop.m""

This reverts commit 21026e037f8642465b7cc878852e0c473f0cad44.
(ver 0.4) : Added com_solv.m + fuelprop.m