Update all batch scripts to output a warning message if JBOSS_HOME is set but pointing to a different location.

An example issue is: -

add-user.sh script error if JBOSS_HOME incorrect: ModuleNotFoundException: Module org.jboss.as.domain-add-user:main is not found
When I access localhost:9990 it says I need to create a user.

But while doing so :

ceefour@annafi:~/jboss-as-7.1.0.CR1/bin$ ./add-user.sh
org.jboss.modules.ModuleNotFoundException: Module org.jboss.as.domain-add-user:main is not found
at org.jboss.modules.LocalModuleLoader.findModule(LocalModuleLoader.java:121)
at org.jboss.modules.ModuleLoader.loadModuleLocal(ModuleLoader.java:245)
at org.jboss.modules.ModuleLoader.preloadModule(ModuleLoader.java:194)
at org.jboss.modules.LocalModuleLoader.preloadModule(LocalModuleLoader.java:97)
at org.jboss.modules.ModuleLoader.loadModule(ModuleLoader.java:176)
at org.jboss.modules.ModuleLoader.loadModule(ModuleLoader.java:172)
at org.jboss.modules.Main.main(Main.java:311)