check.c (gfc_check_reduction): Rename to ...

check.c (gfc_check_reduction): Rename to ...

* check.c (gfc_check_reduction): Rename to ...
(check_reduction): ... this. Make static. Don't check type of
first argument.
(gfc_check_minval_maxval, gfc_check_prodcut_sum): New functions.
* intrinsic.c (add_functions): Change MAXVAL, MINVAL, PRODUCT and
SUM to use new check functions.
(check_specific): Change logic to call new functions.
* intrinsic.h (gfc_check_minval_maxval, gfc_check_product_sum):
Add prototypes.
(gfc_check_reduction): Remove prototype.

From-SVN: r86377