Issue 5576: make output-distance less verbose by default

https://sourceforge.net/p/testlilyissues/issues/5576/

[Dan Eble, 2019-10-17 02:39:37]

SAMPLE OUTPUT
===========================================================================
comparing input/regression/out-test-baseline
       to input/regression/out-test
  2094 signature files
     0 midi files
  1343 log files
  1343 profile files
     1 gittxt file
comparing input/regression/midi/out-test-baseline
       to input/regression/midi/out-test
    30 signature files
    39 midi files
    30 log files
    30 profile files
     1 gittxt file
no source for input/regression/midi/out-test/sequence-name-scoping-1.midi
no source for input/regression/out-test/tree.gittxt
no source for input/regression/midi/out-test/sequence-name-scoping-2.midi
no source for input/regression/midi/out-test/sequence-name-scoping-5.midi
no source for input/regression/midi/out-test/sequence-name-scoping-3.midi
no source for input/regression/midi/out-test/sequence-name-scoping-4.midi
no source for input/regression/midi/out-test/sequence-name-1.midi
no source for input/regression/midi/out-test/sequence-name-3.midi
no source for input/regression/midi/out-test/dynamic-initial-1.midi
no source for input/regression/midi/out-test/tree.gittxt
no source for input/regression/midi/out-test/sequence-name-2.midi
output-distance summary:
    64 changed
   438 below threshold
  3530 unchanged
writing
/home/user/lilypond-build/out/test-results/input/regression/out-test-baseline/test-output-distance.png
writing
/home/user/lilypond-build/out/test-results/input/regression/out-test/test-output-distance.png
convert-im6.q16: profile 'icc': 'RGB ': RGB color space not permitted on
grayscale PNG `/tmp/tmpgMaNJ4/crop1.png' @
warning/png.c/MagickPNGWarningHandler/1667.
convert-im6.q16: profile 'icc': 'RGB ': RGB color space not permitted on
grayscale PNG `/tmp/tmpgMaNJ4/crop2.png' @
warning/png.c/MagickPNGWarningHandler/1667.
writing
/home/user/lilypond-build/out/test-results/input/regression/out-test-baseline/rest-dot-position.png
writing
/home/user/lilypond-build/out/test-results/input/regression/out-test/rest-dot-position.png
convert-im6.q16: profile 'icc': 'RGB ': RGB color space not permitted on
grayscale PNG `/tmp/tmpgMaNJ4/crop1.png' @
warning/png.c/MagickPNGWarningHandler/1667.
convert-im6.q16: profile 'icc': 'RGB ': RGB color space not permitted on
grayscale PNG `/tmp/tmpgMaNJ4/crop2.png' @
warning/png.c/MagickPNGWarningHandler/1667.
writing /home/user/lilypond-build/out/test-results/index.txt

[lemzwerg, 2019-10-17 06:23:52]

LGTM, thanks!

https://codereview.appspot.com/563120043/diff/575170043/GNUmakefile.in
File GNUmakefile.in (right):

https://codereview.appspot.com/563120043/diff/575170043/GNUmakefile.in#newcod...
GNUmakefile.in:349: $(buildscript-dir)/output-distance $(if $(VERBOSE),-v)
--local-datadir --create-images --output-dir $(RESULT_DIR) \
Please try to make it fit into 80 characters per line (together with the
surrounding lines belonging to the change).

[Dan Eble, 2019-10-17 22:21:23]

break a long line

[Dan Eble, 2019-10-17 22:24:03]

On 2019/10/17 22:21:23, Dan Eble wrote:
> break a long line

I prefer not to touch the surrounding lines.

[Dan Eble, 2019-10-28 16:06:27]

remove expression with new-ish syntax

[Dan Eble, 2019-10-28 16:10:01]

On 2019/10/28 16:06:27, Dan Eble wrote:
> remove expression with new-ish syntax

Never mind.  I'm going to create a new review to avoid having to read through
other changes committed to master since this review was current.

[Yannini, 2019-10-31 11:13:17]

On 2019/10/28 16:10:01, Dan Eble wrote:
> <font style="vertical-align: inherit;"><font style="vertical-align:
inherit;">Vào 2019/10/28 16:06:27, Dan Eble đã
viết:</font></font><font></font><font style="vertical-align: inherit;"><font
style="vertical-align: inherit;">
> > xóa biểu thức với cú pháp mới-ish</font></font><font></font>
> <font></font><font style="vertical-align: inherit;"><font
style="vertical-align: inherit;">
> Đừng bận tâm. </font><font style="vertical-align: inherit;">Tôi sẽ tạo một
đánh giá mới để tránh phải đọc qua</font></font><font></font><font
style="vertical-align: inherit;"><font style="vertical-align: inherit;">
> những thay đổi khác được cam kết để làm chủ vì đánh giá này là hiện
tại.</font></font>