let another bad result be allowed
i think this syncs with tomas-parse on these (sandbox_ignore_errors until I sort out how to ignore certain exceptions in the logs that apparently are non-fatal (but not really flagged as INFO correctly)
hex-1923 max_pc argument for PCA allowed in R, rotation matrix returned as dataframe
Add extra accepted lines due to cran archival.
Comment out logToKV.
h2o.prcomp argument order fixed to pass doc check
Backport bugfix for missing fence on file import

First time reading an imported file, need to block until file chunk is
loaded.
Nicer error recovery

Do not attempt to send partial data in a Autobuffer.close called in a
catch(IOException) block from RPC.  Just use drainClose()
Downgrade multicast fails to warns

We survive nearly all multicast fails with retries
add another case as legal result
Split into different log level files.
pub-984 h2o.importFolder now works on folder on windows, tested on cross platform linux/windows
Add HTTPD specific log file.
Tweak file sizes and numbers.  Change MaxBackupIndex to 3 with bigger files.
Typo in HTTPD ConversionPattern key.
Change guess from multiple IP addresses to info from warn.
Added SetLogLevel page in beta tab (and REST api).
More linux data collection script tweaks.
Add CollectLinuxInfo.
Make a method public.
Use API_PORT instead of UDP_PORT-1.
Initial.