WRF4G paths

Each path in WRF4G is able to be configured to use the following protocols:

• LFN ​lfn:///grid/VO/file ​file://home/user/file
• GRIDFTP ​gridftp://hostname:2812/grid/VO/user/file
• RSYNC ​rsync://user@hostname:34/grid/VO/user/file
• SIMBOLIC LINK ln:/home/user/file or ln:file
• FILE file:/home/user/file file:/home/user/file2
• HTTPS ​https://hostname/file
• HTTP ​http://hostname/file
• FTP ​ftp://hostname/path/to/file
• SFTP ​sftp://hostname/path/to/file