I noticed that we only tagged half of the 5.0 deprecations in the omp_lib module;
this added the other half. (omp_lock_hint_* was renamed to omp_sync_hint_*.)

Currently, this patch has has no visible effect - but once we bump the OpenMP version
from 4.5 to 5.0, there will warnings of the those.

Comments, remarks? If not, I will commit the attached patch tomorrow.

Tobias

PS: Once the OpenMP version has been bumped (as done for testing), the warning
looks as follows:

     1 | use omp_lib
       |    1
Warning: Using parameter ‘omp_lock_hint_kind’ declared at (1) is deprecated [-Wdeprecated-declarations]

     3 | print *, omp_get_nested()
       |        1
Warning: Using function ‘omp_get_nested’ at (1) is deprecated [-Wdeprecated-declarations]

The 'omp_lock_hint_kind' warning is not ideal as it uses the declared-at location
and not the first-used location, which would be in line 2:

integer(omp_lock_hint_kind) :: hint
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