renamed KeyStoreFactoryBean.passphrase to password

This is for consistency with the JDK documentation and system properties.
Merge branch 'renameKeyStorePassphraseProperty' into LOGBACK-819
replaced references to 'passphrase' with 'password'
replaced references to 'passphrase' with 'password'
added missing newline escape in example java command

Notice during copy and paste testing of the examples.