Change root context to custom context

Issue

For JBoss, the following is an example of how to change the default root context to custom 'myportal' context.
1. In {JBOSS_HOME}/standalone/deployments, rename ROOT.war and ROOT.war.deployed to myportal.war and myportal.war.deployed.
2. Modify WEB-INF/jboss-web.xml from
```
<context-root>/</context-root>
```
  to
```
<context-root>myportal</context-root>
```
3. Clear up Jboss 'tmp' folder
4. Restart the server
For Tomcat, the following is an example of how to change the default root context to custom 'myportal' context.
1. Update the ROOT folder name (under {LIFERAY_HOME}/tomcat_home/webapps/ROOT) to 'myportal'.
2. Update the ROOT.xml file name (under {LIFERAY_HOME}/tomcat_home/conf/Catalina/localhost/) to 'myportal.xml'.
3. Update the common.loader property in the catalina.properties file name (under {LIFERAY_HOME}/tomcat_home/conf/) from:
```
common.loader=“${catalina.home}/webapps/ROOT/WEB-INF/lib/support-tomcat.jar”
```
  to
```
common.loader=“${catalina.home}/webapps/myportal/WEB-INF/lib/support-tomcat.jar”
```
4. Clear temp and work directories under TOMCAT_HOME.
5. Restart the server.
The original portal URL is "localhost:8080/". After changing the portal context, the portal URL will be changed to "localhost:8080/myportal/".
It is important to also change other paths originally pointing to the ROOT context, such as Patching Tool's configuration file (default.properties):
- war.path
- global.lib.path

Above configuration are Application Server settings. Further recommendations need to be discussed with the corresponding Application Server Vendor.