GAS: Handle multiple fixups in bundle for call adjustment

GAS: Handle multiple fixups in bundle for call adjustment

When using .bundle_lock, there can be multiple instructions, and thus
multiple fixups (relocs to generate) in a single frag.  When the frag
ends in a call instruction, all those fixups need to be adjusted for
the rearrangement of the instruction bytes done to move the call
instruction to the end of the bundle.

This also drops the ancient, unused, and unsupported handling of the
NACL_CONTROL_ENFORCE_RANGE environment variable.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4008
TEST= manual inspection of test case
R=dschuff@chromium.org, sehr@chromium.org

Committed: https://git.chromium.org/gitweb?p=native_client/nacl-binutils.git;a=commit;h=1d8592cc9f02cc9aeaef992c296376a8fd4c8761

[sehr, 2014-12-02 21:42:02]

LGTM and thanks for expunging more prototype code (seven years later :-) ).

[Derek Schuff, 2014-12-02 22:19:52]

On 2014/12/02 21:42:02, sehr (please use this account) wrote:
> LGTM and thanks for expunging more prototype code (seven years later :-) ).

LGTM, and I verified along with
https://code.google.com/p/nativeclient/issues/detail?id=4008 that it works (i.e.
the TLS PIC tests compile and pass now)

[Derek Schuff, 2014-12-02 22:20:17]

On 2014/12/02 22:19:52, Derek Schuff wrote:
> On 2014/12/02 21:42:02, sehr (please use this account) wrote:
> > LGTM and thanks for expunging more prototype code (seven years later :-) ).
> 
> LGTM, and I verified along with
> https://code.google.com/p/nativeclient/issues/detail?id=4008 that it works
(i.e.
> the TLS PIC tests compile and pass now)

oops, that link should be https://codereview.chromium.org/767623005

[Roland McGrath, 2014-12-02 22:50:45]

Committed patchset #1 (id:1) manually as
1d8592cc9f02cc9aeaef992c296376a8fd4c8761 (presubmit successful).