[Patch, committed] gcc/analyzer: Silence -Wpragma warns with GCC < 10

[Tobias Burnus]

Do what most other code does (I think ada/* does not):

Only set this pragma with GCC >= 10. This silences here
228 warnings of the kind:

  analyzer.h:305:32: warning: unknown option after '#pragma GCC diagnostic' kind [-Wpragmas]

Tobias

-----------------
Mentor Graphics (Deutschland) GmbH, Arnulfstraße 201, 80634 München / Germany
Registergericht München HRB 106955, Geschäftsführer: Thomas Heurung, Alexander Walter