SPARK-5669 [BUILD] [HOTFIX] Spark assembly includes incompatibly licensed libgfortran, libgcc code via JBLAS

Correct exclusion path for JBLAS native libs.
(More explanation coming soon on the mailing list re: 1.3.0 RC1)

Author: Sean Owen <sowen@cloudera.com>

Closes #4673 from srowen/SPARK-5669.2 and squashes the following commits:

e29693c [Sean Owen] Correct exclusion path for JBLAS native libs

Author: srowen

assembly/pom.xml

@@ -119,9 +119,9 @@
               <artifact>org.jblas:jblas</artifact>
               <excludes>
                 <!-- Linux amd64 is OK; not statically linked -->
-                <exclude>lib/Linux/i386/**</exclude>
-                <exclude>lib/Mac OS X/**</exclude>
-                <exclude>lib/Windows/**</exclude>
+                <exclude>lib/static/Linux/i386/**</exclude>
+                <exclude>lib/static/Mac OS X/**</exclude>
+                <exclude>lib/static/Windows/**</exclude>
               </excludes>
             </filter>
           </filters>