glsl: rename is_record() -> is_struct()

Replace was done using:
find ./src -type f -exec sed -i -- \
's/is_record(/is_struct(/g' {} \;

Acked-by: Karol Herbst <kherbst@redhat.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>

src/compiler/glsl/hir_field_selection.cpp

@@ -46,7 +46,7 @@ _mesa_ast_field_selection_to_hir(const ast_expression *expr,
    YYLTYPE loc = expr->get_location();
    if (op->type->is_error()) {
       /* silently propagate the error */
-   } else if (op->type->is_record() || op->type->is_interface()) {
+   } else if (op->type->is_struct() || op->type->is_interface()) {
       result = new(ctx) ir_dereference_record(op,
 					      expr->primary_expression.identifier);