FPHSA: add USE_ORIGINAL_CASE option

If FPHSA() is called with USE_ORIGINAL_CASE, then the name
of the _FOUND variable will be SomePackage_FOUND instead of SOMEPACKAGE_FOUND.

Alex
Merge topic 'FPHSA_USE_ORIGINAL_CASE' into next

aaad58c FPHSA: add USE_ORIGINAL_CASE option