* testsuite/README: Change "UNSUPPORTED" tag to "FEATURE".

* testsuite/runtest (run_applet_testcase): Likewise.
* testsuite/cp/cp-preserves-hard-links: Likewise.
* testsuite/grep/egrep-supports-extended-regexps: Likewise.
* testsuite/grep/grep-is-also-egrep: Likewise.
* testsuite/tar/tar-archives-multiple-files: Likewise.
* testsuite/tar/tar-handles-empty-include-and-non-empty-exclude-list:
  Likewise.
* testsuite/tar/tar-handles-exclude-and-extract-lists: Likewise.
* testsuite/tar/tar-handles-nested-exclude: Likewise.

testsuite/README

@@ -6,10 +6,11 @@ cases for particular applets, specify them as parameters to runtest.
 The test cases for an applet reside in the subdirectory of the applet name.  The
 name of the test case should be the assertion that is tested.  The test case
 should be a shell fragment that returns successfully if the test case passes,
-and unsuccessfully otherwise.  If the test case is known to fail, it should be
-marked as such by including the string "XFAIL" in a comment.  If a certain
-feature must be enabled for it to pass, it should indicate that by including the
-string "UNSUPPORTED: " followed by the feature name in a comment.
+and unsuccessfully otherwise.
+
+If the test case relies on a certain feature, it should include the string
+"FEATURE: " followed by the name of the feature in a comment.  If it is always
+expected to fail, it should include the string "XFAIL" in a comment.
 
 For the entire testsuite, the copyright is as follows:
 

testsuite/cp/cp-preserves-hard-links

@@ -1,4 +1,4 @@
-# UNSUPPORTED: CONFIG_FEATURE_PRESERVE_HARDLINKS
+# FEATURE: CONFIG_FEATURE_PRESERVE_HARDLINKS
 touch foo
 ln foo bar
 mkdir baz

testsuite/grep/egrep-supports-extended-regexps

@@ -1,2 +1,2 @@
-# UNSUPPORTED: CONFIG_FEATURE_GREP_EGREP_ALIAS
+# FEATURE: CONFIG_FEATURE_GREP_EGREP_ALIAS
 test x`echo foo | busybox egrep fo+` = xfoo

testsuite/grep/grep-is-also-egrep

@@ -1,2 +1,2 @@
-# UNSUPPORTED: CONFIG_FEATURE_GREP_EGREP_ALIAS
+# FEATURE: CONFIG_FEATURE_GREP_EGREP_ALIAS
 echo foo | busybox egrep foo

testsuite/runtest

@@ -36,8 +36,8 @@ run_applet_testcase ()
 		return 0
 	fi
 
-	if grep -q "^# UNSUPPORTED: " $testcase; then
-		local feature=`sed -ne 's/.*UNSUPPORTED: //p' $testcase`
+	if grep -q "^# FEATURE: " $testcase; then
+		local feature=`sed -ne 's/^# FEATURE: //p' $testcase`
 
 		if grep -q "^# ${feature} is not set$" ../.config; then
 			show_result UNTESTED $testname

testsuite/tar/tar-archives-multiple-files

@@ -1,4 +1,4 @@
-# UNSUPPORTED: CONFIG_FEATURE_TAR_CREATE
+# FEATURE: CONFIG_FEATURE_TAR_CREATE
 touch foo bar
 busybox tar cf foo.tar foo bar
 rm foo bar

testsuite/tar/tar-handles-empty-include-and-non-empty-exclude-list

@@ -1,4 +1,4 @@
-# UNSUPPORTED: CONFIG_FEATURE_TAR_EXCLUDE
+# FEATURE: CONFIG_FEATURE_TAR_EXCLUDE
 touch foo
 tar cf foo.tar foo
 echo foo >foo.exclude

testsuite/tar/tar-handles-exclude-and-extract-lists

@@ -1,4 +1,4 @@
-# UNSUPPORTED: CONFIG_FEATURE_TAR_EXCLUDE
+# FEATURE: CONFIG_FEATURE_TAR_EXCLUDE
 touch foo bar baz
 tar cf foo.tar foo bar baz
 echo foo >foo.exclude

testsuite/tar/tar-handles-nested-exclude

@@ -1,4 +1,4 @@
-# UNSUPPORTED: CONFIG_FEATURE_TAR_EXCLUDE
+# FEATURE: CONFIG_FEATURE_TAR_EXCLUDE
 mkdir foo
 touch foo/bar
 tar cf foo.tar foo