Fix formatting of startup/configuration errors

[rmuir]

Previous versions of ES wouldn't give you a stacktrace at all, but just print messages, which left you wondering where that Nested: NullPointerException; came from.

On the other hand, currently in 2.0 if you misconfigure something and piss guice off enough, you will get 2MB of exceptions to the console. Sorry, that is unusable. It may even OOM your terminal window.

This PR attempts to make a compromise, so users arent horrified, but things can be debugged too:

• It tries to present message and root cause with stacktrace
• Stacktraces are limited to 30 frames, otherwise truncated, with a message they were truncated
• Runs of guice frames are replaced with a marker.
• The user is notified to check the logs for the full error details.

Example:

Exception in thread "main" Failed to resolve address for [_bogushost]
Likely root cause: java.net.UnknownHostException: _bogushost: unknown error
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:907)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1302)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1255)
    at java.net.InetAddress.getAllByName(InetAddress.java:1171)
    at java.net.InetAddress.getAllByName(InetAddress.java:1105)
    at org.elasticsearch.transport.netty.NettyTransport.parse(NettyTransport.java:642)
    at org.elasticsearch.transport.netty.NettyTransport.addressesFromString(NettyTransport.java:594)
    at org.elasticsearch.transport.TransportService.addressesFromString(TransportService.java:388)
    at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing.<init>(UnicastZenPing.java:138)
    at org.elasticsearch.discovery.zen.ping.ZenPingService.<init>(ZenPingService.java:60)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
    at <<<guice>>>
    at org.elasticsearch.node.Node.<init>(Node.java:190)
    at org.elasticsearch.node.NodeBuilder.build(NodeBuilder.java:157)
    at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:177)
    at org.elasticsearch.bootstrap.Bootstrap.main(Bootstrap.java:272)
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:28)
Refer to the log for complete error details.

[s1monw]

WOW man! what a great idea and how simple!! LGTM go push this to 2.0 as well please

[rjernst]

LGTM too