RFC: [build, ada] Centralize PICFLAG configuration

[Mike Stump]

On Aug 18, 2011, at 10:03 AM, Rainer Orth wrote:
> Mike Stump <mikestump@comcast.net> writes:
> 
>> On Aug 15, 2011, at 10:53 AM, Rainer Orth wrote:
>>> * git libtool.m4 uses -fno-common on *-*-darwin.  No idea if this is
>>> required.
>> 
>> Yes, it is.
> 
> Fine, thanks.  I was just confused by the fact that it isn't currently
> used to build the shared libgcc.

Hum...  Truly odd.  Watch for fallout if you change it, I'd hate to be wrong.  I can't imagine there are any common symbols in there though.