[gdb] (2 commits) ...[vla] Fix regression on no type for subrange from IBM XLF Fortran (BZ 806920).

[Jan Kratochvil]

Summary of changes:

  3d3c8f2... Fix loading of core files without build-ids but with build- (*)
  9d32f32... [vla] Fix regression on no type for subrange from IBM XLF F (*)

(*) This commit already existed in another branch; no separate mail sent