TRIVIAL: log critical runtime env details

`
jvm 1    | 2013-12-12 10:38:40,872-0800 INFO  [WrapperListener_start_runner] - org.sonatype.nexus.bootstrap.jsw.JswLauncher$1 - Java: 1.7.0_45, Java HotSpot(TM) 64-Bit Server VM, Oracle Corporation, 24.45-b08
jvm 1    | 2013-12-12 10:38:40,872-0800 INFO  [WrapperListener_start_runner] - org.sonatype.nexus.bootstrap.jsw.JswLauncher$1 - OS: Mac OS X, 10.9, x86_64
jvm 1    | 2013-12-12 10:38:40,872-0800 INFO  [WrapperListener_start_runner] - org.sonatype.nexus.bootstrap.jsw.JswLauncher$1 - User: jason, en, /Users/jason
jvm 1    | 2013-12-12 10:38:40,873-0800 INFO  [WrapperListener_start_runner] - org.sonatype.nexus.bootstrap.jsw.JswLauncher$1 - CWD: /Users/jason/ws/sonatype/nexus/nexus-oss/target/nexus-bundle-template-2.8.0-SNAPSHOT
jvm 1    | 2013-12-12 10:38:40,873-0800 INFO  [WrapperListener_start_runner] - org.sonatype.nexus.bootstrap.jsw.JswLauncher$1 - TMP: /Users/jason/ws/sonatype/nexus/nexus-oss/target/sonatype-work/nexus/tmp
`