Issue 26: Fixed issue for 10g users
Issue 24: Changed API call to use text rather than number for logger_level
NoTicket:
  - M g_logger_version to use 'x.x.x' so build script will apply correct version number
  - M convert_level_char_to_num so it uses global vars and added in APEX var.
Merge branch 'master' of https://github.com/tmuth/Logger---A-PL-SQL-Logging-Utility