Subzero: Clean up function header emission.

Subzero: Clean up function header emission.

1. Don't do anything in Cfg::emitTextHeader() in MINIMAL mode.  (Reduces binary size by 1KB.)  This actually broke a number of lit tests for the MINIMAL build, so "--assemble --disassemble" was changed to "--filetype=obj --disassemble".  This allowed (or required) better precision in checking for data symbols.

1a. For the lit files touched, go ahead and remove "-verbose none" since that will forevermore by the default.

2. Don't emit the ".bundle_align_mode" directive.  This is not
necessary when assembling with the right -triple argument.

BUG= none
R=jvoung@chromium.org, kschimpf@google.com

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=729dbd0194c1aa39c41911cd29efeb19c5ea1178

[Jim Stichnoth, 2015-02-25 14:36:34]

stichnot@chromium.org changed reviewers:
+ jvoung@chromium.org, kschimpf@google.com, mtrofin@chromium.org

[Karl, 2015-02-25 17:48:32]

lgtm

[Jim Stichnoth, 2015-02-25 20:27:31]

PTAL.  It was originally a very simple change, and I added reviewers to the CL
before remembering to "make MINIMAL=1 check".

[jvoung (off chromium), 2015-02-25 21:32:34]

lgtm yikes

[Jim Stichnoth, 2015-02-25 22:48:48]

Committed patchset #2 (id:20001) manually as
729dbd0194c1aa39c41911cd29efeb19c5ea1178 (presubmit successful).