40470: make the test work also with ASCII collation

a few OSs (macOS and some versions of BSDs) use ASCII collation even if
UTF-8 locale is in use

ChangeLog

@@ -1,3 +1,8 @@
+2017-02-01  Jun-ichi Takimoto <takimoto-j@kba.biglobe.ne.jp>
+
+	* 40470: Test/D07multibyte.ztst: make the test work also on
+	OSs which always use ASCII collation (e.g. macOS).
+
 2017-01-31  Peter Stephenson  <p.stephenson@samsung.com>
 
 	* 40466: Makefile.in: update depencencies so autoheader is run

Test/D07multibyte.ztst

@@ -551,22 +551,20 @@
   : $functions)
 0:Multibyte handling of functions parameter
 
-  if [[ -n ${$(locale -a 2>/dev/null)[(R)pl_PL.(utf8|UTF-8)]} ]]; then
-  (
-    export LC_ALL=pl_PL.UTF-8
-    local -a names=(a b c d e f $'\u0105' $'\u0107' $'\u0119')
-    print -o $names
-    mkdir -p plchars
-    cd plchars
-    touch $names
-    print ?
-  )
-  else
-    ZTST_skip="No Polish UTF-8 locale found, skipping sort test"
-  fi
-0:Sorting of metafied Polish characters
->a ą b c ć d e ę f
->a ą b c ć d e ę f
+# c1=U+0104 (Ą) and c2=U+0120 (Ġ) are chosen so that
+#   u1 = utf8(c1) = c4 84  <  u2 = utf8(c2) = c4 a0
+#   metafy(u1) = c4 83 a4  >  metafy(u2) = c4 83 80
+# in both UTF-8 and ASCII collations (the latter is used in macOS
+# and some versions of BSDs).
+  local -a names=( $'\u0104' $'\u0120' )
+  print -o $names
+  mkdir -p colltest
+  cd colltest
+  touch $names
+  print ?
+0:Sorting of metafied characters
+>Ą Ġ
+>Ą Ġ
 
   printf '%q%q\n' 你你
 0:printf %q and quotestring and general metafy / token madness