Add support for binary Leica XCF / DBX format
Leica 1200 series total stations output a file-based raw data format, that is binary (not ASCII) and is recognizable by the presence of an "index" file with the
.XCF extension. Other files in the archive correspond to jobs and have file extensions such as
.X02 and so on.
This is a binary, undocumented file format.
Sample files are attached, graciously provided by Anna Hodgkinson (Anna Hodgkinson) and Hannah Petten.