Update Checkstyle to version 5.8

Changes in 5.8 are described here:
http://checkstyle.sourceforge.net/releasenotes.html

BUG=318404
R=yfriedman@chromium.org

Review URL: https://codereview.chromium.org/644133002

Cr-Commit-Position: refs/heads/master@{#299207}

third_party/checkstyle/README.chromium

@@ -2,7 +2,7 @@ Name: Checkstyle is a development tool to help programmers write Java code that
       adheres to a coding standard.
 Short Name: checkstyle
 URL: http://checkstyle.sourceforge.net/
-Version: 5.7
+Version: 5.8
 License: LGPL 2.1
 License File: LICENSE
 Security Critical: no
@@ -17,9 +17,9 @@ Local Modifications:
   - checkstyle_checks.xml
   - import-control.xml
   - supressions.xml
-- Removed jars already included in checkstyle-5.7-all.jar
+- Removed jars already included in checkstyle-5.8-all.jar
   - antlr-2.7.7.jar
-  - checkstyle-5.7.jar
+  - checkstyle-5.8.jar
   - commons-beanutils-core-1.8.3.jar
   - commons-cli-1.2.jar
   - commons-logging-1.1.1.jar

tools/android/checkstyle/checkstyle.py

@@ -12,7 +12,7 @@ CHROMIUM_SRC = os.path.normpath(
     os.path.join(os.path.dirname(__file__),
                  os.pardir, os.pardir, os.pardir))
 CHECKSTYLE_ROOT = os.path.join(CHROMIUM_SRC, 'third_party', 'checkstyle',
-                               'checkstyle-5.7-all.jar')
+                               'checkstyle-5.8-all.jar')
 
 
 def RunCheckstyle(input_api, output_api, style_file):