PATCH: Improved diagnosis of overflowed memory regions

[Nick Clifton]

Hi Zack,

> ld:
>     * ldlang.c (lang_check_section_addresses): Also report size of
>     overflow for any overflowed memory regions.
>     (os_region_check): Diagnose an overflowed region only once per
>     region.  Do not reset region->current on overflow.
> ld/testsuite:
>     * ld-scripts/rgn-over.exp: New driver.
>     * ld-scripts/rgn-over.s: New file.
>     * ld-scripts/rgn-over1.d, ld-scripts/rgn-over1.t
>     * ld-scripts/rgn-over2.d, ld-scripts/rgn-over2.t
>     * ld-scripts/rgn-over3.d, ld-scripts/rgn-over3.t
>     * ld-scripts/rgn-over4.d, ld-scripts/rgn-over4.t
>     * ld-scripts/rgn-over5.d, ld-scripts/rgn-over5.t
>     * ld-scripts/rgn-over6.d, ld-scripts/rgn-over6.t
>     * ld-scripts/rgn-over7.d, ld-scripts/rgn-over7.t:
>     New test cases.

Approved - please apply.

Cheers
   Nick