Merge branch 'stable-5.0'

* stable-5.0:
  Update maven plugins to fix Zip Slip vulnerability
  Prepare 5.0.0-SNAPSHOT builds
  JGit v5.0.0.201806050710-rc3

Change-Id: Icb1f34d3f49938fefa25d86857aa5048e54dcc7a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

pom.xml

@@ -213,7 +213,7 @@
     <httpcore-version>4.4.6</httpcore-version>
     <slf4j-version>1.7.2</slf4j-version>
     <log4j-version>1.2.15</log4j-version>
-    <maven-javadoc-plugin-version>3.0.0</maven-javadoc-plugin-version>
+    <maven-javadoc-plugin-version>3.0.1</maven-javadoc-plugin-version>
     <tycho-extras-version>1.1.0</tycho-extras-version>
     <gson-version>2.8.2</gson-version>
     <spotbugs-maven-plugin-version>3.1.2</spotbugs-maven-plugin-version>
@@ -286,7 +286,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-dependency-plugin</artifactId>
-          <version>3.0.2</version>
+          <version>3.1.1</version>
         </plugin>
 
         <plugin>