patch 8.0.0311: linebreak tests are old style

Problem:    Linebreak tests are old style.
Solution:   Turn the tests into new style. Share utility functions. (Ozaki
            Kiichi, closes #1444)

Author: brammool

src/Makefile

@@ -2072,8 +2072,6 @@ test1 \
 	test_getcwd \
 	test_insertcount \
 	test_listchars \
-	test_listlbr \
-	test_listlbr_utf8 \
 	test_search_mbyte \
 	test_wordcount \
 	test3 test4 test5 test6 test7 test8 test9 \
@@ -2148,6 +2146,8 @@ test_arglist \
 	test_langmap \
 	test_largefile \
 	test_lispwords \
+	test_listlbr \
+	test_listlbr_utf8 \
 	test_lua \
 	test_man \
 	test_mapping \

src/testdir/Make_all.mak

@@ -82,7 +82,6 @@ SCRIPTS_ALL = \
 	test_getcwd.out \
 	test_insertcount.out \
 	test_listchars.out \
-	test_listlbr.out \
 	test_search_mbyte.out \
 	test_wordcount.out
 
@@ -101,8 +100,7 @@ SCRIPTS_MORE2 = \
 	test12.out \
 	test25.out \
 	test49.out \
-	test97.out \
-	test_listlbr_utf8.out
+	test97.out
 
 
 # Tests that run on most systems, but not MingW and Cygwin.
@@ -164,6 +162,8 @@ NEW_TESTS = test_arglist.res \
 	    test_job_fails.res \
 	    test_json.res \
 	    test_langmap.res \
+	    test_listlbr.res \
+	    test_listlbr_utf8.res \
 	    test_lua.res \
 	    test_man.res \
 	    test_marks.res \