* common.mk (help): Fix environment variable name and argument.

Actually it can also be a directory or any argument for
  test/unit runner. [Fixes GH-363]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42091 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Sun Jul 21 01:07:45 2013  Benoit Daloze  <eregontp@gmail.com>
+
+	* common.mk (help): Fix environment variable name and argument.
+	  Actually it can also be a directory or any argument for
+	  test/unit runner. [Fixes GH-363]
+
 Sat Jul 20 22:44:50 2013  Zachary Scott  <e@zzak.io>
 
 	* common.mk: Document running a single test [Fixes GH-363]

common.mk

@@ -1071,7 +1071,7 @@ help: PHONY
 	"  gdb-ruby:        runs test.rb by ruby under gdb" \
 	"  check:           equals make test test-all" \
 	"  test:            ruby core tests" \
-	"  test-all:        all ruby tests [TEST=<specific_test_file.rb>]" \
+	"  test-all:        all ruby tests [TESTS=<test files>]" \
 	"  test-rubyspec:   run RubySpec test suite" \
 	"  update-rubyspec: update local copy of RubySpec" \
 	"  benchmark:       benchmark this ruby and COMPARE_RUBY" \