Optimize jetty startup when dealing with directories on the classpath

	+ Jetty startup is very, very slow when there are exploded directories
on the classpath
	+ Jetty startup is rather fast when there are only JAR archives on the
classpath
	
	+ Created a new optimized webappclassloader that detects archives on
the classpath, creates JAR archives for them and adds the archive to the
classpath
	+ Possibility to exclude specical directories via regular expressions
(for example .*web.* to leave web modules as they are to enable tapestry
live reloading)
	
	+ Extend the eclipse plugin to enable/disable the usage of the
optimized class loader
	+ Extend the eclipse plugin to define the exclusion patterns
	
	+ Change everything to java 1.8 (source and compile level)
	
	+ Adapt .travis.yml to java 8

Author: StrongSteve

.travis.yml

@@ -1 +1,12 @@
-language: java
+sudo: required
+
+language: java
+
+jdk:
+  - oraclejdk8
+
+addons:
+  apt:
+    packages:
+    - oracle-java8-installer
+	- oracle-java8-set-default

plugins/eclipse-jetty-launcher/pom.xml

@@ -59,6 +59,13 @@
 			<scope>provided</scope>
 			<optional>true</optional>
 		</dependency>
+		
+		<dependency>
+			<groupId>net.sourceforge.eclipsejetty</groupId>
+			<artifactId>eclipse-jetty-optimized-webappclassloader</artifactId>
+			<version>${project.version}</version>
+			<scope>provided</scope>
+		</dependency>
 
 		<dependency>
 			<groupId>junit</groupId>
@@ -80,8 +87,8 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<configuration>
-					<source>1.5</source>
-					<target>1.5</target>
+					<source>1.8</source>
+					<target>1.8</target>
 				</configuration>
 			</plugin>
 
@@ -103,7 +110,8 @@
 								eclipse-jetty-starters-jetty8,
 								eclipse-jetty-starters-jetty9,
 								eclipse-jetty-starters-console,
-								eclipse-jetty-starters-util</includeArtifactIds>
+								eclipse-jetty-starters-util,
+								eclipse-jetty-optimized-webappclassloader</includeArtifactIds>
 							<outputDirectory>${project.build.directory}/../lib</outputDirectory>
 							<stripVersion>true</stripVersion>
 						</configuration>