[LyX/master] Added distribution of a missing file used by tests.

[Kornel Benko]

commit c1ee1bc0baf00a64734ec5eb345884c057e4d9c1
Author: Kornel Benko <kor...@lyx.org>
Date:   Tue Apr 25 10:01:08 2017 +0200

    Added distribution of a missing file used by tests.
---
 lib/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/lib/Makefile.am b/lib/Makefile.am
index fd3d518..66fe051 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -2343,6 +2343,7 @@ dist_scripts_DATA += \
        scripts/prefs2prefs.py \
        scripts/prefs2prefs_lfuns.py \
        scripts/prefs2prefs_prefs.py \
+       scripts/prefTest.pl.in \
        scripts/tex_copy.py \
        scripts/TeXFiles.py