Added baton-get program to improve performance downloading small
files, compared to iget.
Allow local paths to be constructed automatically for data objects
having only a directory JSON property.
Print the JSON results, not the target.
Updated the manual for baton-get
Fixed uninitialised memory in file slurping.

Fixed memory leak in iRODS MD5 checksum.
String lengths are check constructing an iRODS path
Removed redundant functions.
Fixed typo
Merge pull request #85 from keithj/devel

Added baton-get program
Use calloc for consistency with other functions
Added test_write_path_to_stream
Merge pull request #86 from keithj/devel

Added a new test for data object reading/writing