[PATCH 4/7] Copy gnulib obstack files

[Jeff Law]

On 11/07/2015 01:09 AM, Alan Modra wrote:
> This copies obstack.[ch] from gnulib, and updates the docs.  The next
> patch should be applied if someone repeats the import at a later date.
>
> include/
> 	PR gdb/17133
> 	* obstack.h: Import current gnulib file.
> libiberty/
> 	PR gdb/17133
> 	* obstack.c: Import current gnulib file.
> 	* obstacks.texi: Updated doc, from glibc's manual/memory.texi.
I didn't really walk through this patch since it's coming directly from 
gnulib. OK for the trunk.

jeff