input.Makefile: Import to VegBIEN: Fixed bug where `&>>` was used to append stdout and stderr to the log file, but is not supported on Mac OS X. Replaced with `&>` (overwrite instead of append) because log file is unique by date/time the import runs, so there won't be an existing log file that would be overwritten.
input.Makefile: Import to VegBIEN: Fixed bug where `&>>` was used to append stdout and stderr to the log file, but is not supported on Mac OS X. Replaced with `&>` (overwrite instead of append) because log file is unique by date/time the import runs, so there won't be an existing log file that would be overwritten.