Changing -W to -Wextra for Linux builds

[David Hill]

https://bugs.openjdk.java.net/browse/JDK-8088200

patch is attached to the bug, same fix multiple times:

diff -r 132033191951 buildSrc/armv5sf.gradle
--- a/buildSrc/armv5sf.gradle	Fri May 29 17:09:06 2015 -0400
+++ b/buildSrc/armv5sf.gradle	Fri May 29 20:39:07 2015 -0400
@@ -96,7 +96,7 @@

  def commonFlags = [
          "-fno-strict-aliasing", "-fPIC", "-fno-omit-frame-pointer", // optimization flags
-        "-W", "-Wall", "-Wno-unused", "-Wno-parentheses", "-Werror=implicit-function-declaration"] // warning flags
+        "-Wextra", "-Wall", "-Wno-unused", "-Wno-parentheses", "-Werror=implicit-function-declaration"] // warning flags
  // Specify the compilation parameters and link parameters
  def ccFlags = [
          commonFlags, "-I$JDK_HOME/include", "-I$JDK_HOME/include/$jniPlatform", "-c",


-- 
David Hill<David.Hill at Oracle.com>
Java Embedded Development

"A man's feet should be planted in his country, but his eyes should survey the world."
-- George Santayana (1863 - 1952)