Renamed global variable exporttype to exporttypes.
This is analogue to the other similar global variables.
Fixed some more spellos.
Removed redundant import.
Importing a non-existant directory isn't useful.
Somewhat clearer conf parsing code. Some reindentations in main().
Moved batch size constant to a #define.
Write debug to stderr.
Fixed typo. meating ==> meeting.
The usage message should now actually work.
Removed white-space at end-of-line.
Changes from 20161107 snapshot:
* Removed passwords from source.
* Extracted various notes to separate files
(DEBUG.txt, Implementation-Notes.txt, README.txt, TODO.txt).
* Added .gitignore.