FPHSA: when EXACT version match is requested only compare the components given

Given that you have a foobar that identifies itself as 1.2.3 from now on a

  find_package(foobar 1.2 EXACT)

will succeed, as 1.2.3 will now be considered as being 1.2. Until now this was
only the case for version 1.2.0.
Merge topic 'FPHSA_exact_version' into next

f3498389 FPHSA: when EXACT version match is requested only compare the components given