[gtksourceview] build: use CLEANFILES for files built by make

[Sébastien Wilmet <swilmet src gnome org>]

commit ef65fdf5c2e42bfbd7d531279ade4b56068176c9
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Dec 21 20:24:08 2016 +0100

    build: use CLEANFILES for files built by make
    
    Best practice is to use CLEANFILES to clean stuff built by make, and
    DISTCLEANFILES only for stuff built by configure. Everyone has to run
    make and it's very unexpected for 'make clean' to not clean things it
    builds.

 testsuite/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/testsuite/Makefile.am b/testsuite/Makefile.am
index 33650cb..f347107 100644
--- a/testsuite/Makefile.am
+++ b/testsuite/Makefile.am
@@ -124,7 +124,7 @@ instteststyle_DATA =                        \
 
 test_files = $(UNIT_TEST_PROGS:=.test)
 
-DISTCLEANFILES = $(test_files)
+CLEANFILES = $(test_files)
 
 testmetadir = $(datadir)/installed-tests/$(PACKAGE)-@GSV_API_VERSION@
 testmeta_DATA = $(test_files)