mesa: fix and simplify resource query for arrays

mesa: fix and simplify resource query for arrays

This removes the need for multiple functions designed to validate an array
subscript and replaces them with a call to a single function.

The change also means that validation is now only done once and the index
is retrived at the same time, as a result the getUniformLocation code can
be simplified saving an extra hash table lookup (and yet another
validation call).

This chage also fixes some tests in:
ES31-CTS.program_interface_query.uniform

V3: rebase on subroutines, and move the resource index array == 0
check into _mesa_GetProgramResourceIndex() to simplify things further

V2: Fix bounds checks for program input/output, split unrelated comment fix
and _mesa_get_uniform_location() removal into their own patch.

Cc: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>