[SPARK-6341][mllib] Upgrade breeze from 0.11.1 to 0.11.2

There are any bugs of breeze's SparseVector at 0.11.1. You know, Spark 1.3 depends on breeze 0.11.1. So I think we should upgrade it to 0.11.2.
https://issues.apache.org/jira/browse/SPARK-6341

And thanks you for your great cooperation, David Hall(dlwh)

Author: Yu ISHIKAWA <yuu.ishikawa@gmail.com>

Closes #5222 from yu-iskw/upgrade-breeze and squashes the following commits:

ad8a688 [Yu ISHIKAWA] Upgrade breeze from 0.11.1 to 0.11.2 because of a bug of SparseVector. Thanks you for your great cooperation, David Hall(@dlwh)

mllib/pom.xml

@@ -64,7 +64,7 @@
     <dependency>
       <groupId>org.scalanlp</groupId>
       <artifactId>breeze_${scala.binary.version}</artifactId>
-      <version>0.11.1</version>
+      <version>0.11.2</version>
       <exclusions>
         <!-- This is included as a compile-scoped dependency by jtransforms, which is
              a dependency of breeze. -->