[fortran, patch] Audit and patch of F95 and F2003 "non-default kind specifiers" warnings

[FX]

> It seems that some of these extensions are not caught by -std=f95

I’ve now audited the I/O specifiers for such warnings too. A warning existed only for EXIST, which was introduced way back by Steve:

> 2010-07-05  Steven G. Kargl  <kargl@gcc.gnu.org>
> 
>         PR fortran/44797
>         * fortran/io.c (resolve_tag): Check EXIST tag is a default logical.

I’ve extended the logical warning to the NAMED, OPENED, and PENDING specifiers. I’ve also audited the integer specifiers, and extended the warning to NUMBER, NEXTREC, and RECL, which were missing.

Bootstrapped and regtested on x86_64-apple-darwin13, OK to commit?

FX


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