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

Review URL: https://codereview.chromium.org/955003002