hush: fix expansion of quoted $VAR, $* and $@

shell/hush_test/hush-bugs/quote3.right

@@ -1,8 +1,3 @@
 Testing: in $empty""
 ..
-Testing: in "$*"
-.abc d e.
-Testing: in "$@"
-.abc.
-.d e.
 Finished

shell/hush_test/hush-bugs/quote3.tests

@@ -5,8 +5,4 @@ fi
 echo 'Testing: in $empty""'
 empty=''
 for a in $empty""; do echo ".$a."; done
-echo 'Testing: in "$*"'
-for a in "$*"; do echo ".$a."; done
-echo 'Testing: in "$@"'
-for a in "$@"; do echo ".$a."; done
 echo Finished

shell/hush_test/hush-bugs/starquoted.right

@@ -1 +0,0 @@
-.1 abc d e f.

shell/hush_test/hush-bugs/starquoted.tests

@@ -1,4 +0,0 @@
-if test $# = 0; then
-    exec "$THIS_SH" starquoted.tests 1 abc 'd e f'
-fi
-for a in "$*"; do echo ".$a."; done

shell/hush_test/hush-parsing/quote4.right

@@ -0,0 +1 @@
+a b

shell/hush_test/hush-parsing/quote4.tests

@@ -0,0 +1,2 @@
+a_b='a b'
+echo "$a_b"

shell/hush_test/hush-parsing/starquoted.right

@@ -0,0 +1,8 @@
+.1 abc d e f.
+.1.
+.abc.
+.d e f.
+.-1 abc d e f-.
+.-1.
+.abc.
+.d e f-.

shell/hush_test/hush-parsing/starquoted.tests

@@ -0,0 +1,8 @@
+if test $# = 0; then
+    exec "$THIS_SH" "$0" 1 abc 'd e f'
+fi
+
+for a in "$*"; do echo ".$a."; done
+for a in "$@"; do echo ".$a."; done
+for a in "-$*-"; do echo ".$a."; done
+for a in "-$@-"; do echo ".$a."; done