Several bug fixes:
- Ignore OKS lock files appeared in the cache directory
- Skip locked files appeared in the cache directory during work of
oks_merge (i.e. only save non-locked files)
- Properly close connection in case of exceptions to avoid many
simultaneously open connections
- Properly manage situation, when the cache directory is a soft link
- oks_merge reports any errors using ERS; for the moment this is
the
only possibility to notify shifter, if files to be archived cannot be
created in cache directory
- Fix lost-precision bug when archive double number (avoid
unexpected intermediate conversion of them to float type by CORAL)
- Use new schema version if it appears while oks2coral is running