Retry writing to log stream
Copy syslog package from go1.2rc2 (rev 51407182d459)

Fixes missing handling of write errors to the syslog connection.
Use syslog package from Go 1.2rc2

We need the missing write error handling (Go issue #5541).
Write log errors to stderr (as there is no logger)
Merge pull request #30 from Jimdo/fix-syslog-write

Fix writing to syslog