As for the _G_O_T_ symbol value, there's no reason for the value
be within the .got section; the value may be offset by +- 32k to aid
indexing. Further, Alpha supports multiple .got subsections, such that
_G_O_T_ does not represent a global value across the entire DSO.
Honestly there's no reason to check this on Alpha.
I made it accept any value though it will still check that the st_shndx
is in .got. If it's really necessary to disarm that part of the check
as well, we'll have to change the generic part of elflint to let the
backend control that.