[commit: ghc] master: Enabled warn on tabs by default (fixes #9230) (972ba12)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/972ba1210d1bb535c41526ce396c0f086d30b59a/ghc

>---------------------------------------------------------------

commit 972ba1210d1bb535c41526ce396c0f086d30b59a
Author: Mateusz Lenik <mlen at mlen.pl>
Date:   Tue Oct 21 15:34:00 2014 -0500

    Enabled warn on tabs by default (fixes #9230)
    
    Summary:
    This revision enables -fwarn-tabs by default and add a suppression
    flag, so that GHC compilation won't fail when some files contain tab
    characters.
    
    Test Plan: Additional test case, T9230, was added to cover that change.
    
    Reviewers: austin
    
    Reviewed By: austin
    
    Subscribers: simonmar, ezyang, carter, thomie, mlen
    
    Differential Revision: https://phabricator.haskell.org/D255
    
    GHC Trac Issues: #9230
    
    Conflicts:
    	testsuite/driver/testlib.py


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972ba1210d1bb535c41526ce396c0f086d30b59a
 compiler/main/DynFlags.hs                          |  3 +-
 docs/users_guide/7.10.1-notes.xml                  |  6 +++
 mk/validate-settings.mk                            |  9 ++++
 testsuite/driver/testlib.py                        | 62 +++++++++++++++++++---
 testsuite/mk/test.mk                               |  8 +++
 testsuite/tests/deSugar/should_compile/all.T       |  4 +-
 testsuite/tests/ghci/scripts/all.T                 |  2 +-
 testsuite/tests/module/all.T                       |  2 +-
 testsuite/tests/warnings/should_compile/T9230.hs   |  5 ++
 .../tests/warnings/should_compile/T9230.stderr     |  2 +
 testsuite/tests/warnings/should_compile/all.T      |  1 +
 11 files changed, 92 insertions(+), 12 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 972ba1210d1bb535c41526ce396c0f086d30b59a