BF+ACK: provide proper error message for old dataset structs. Thanks to #Jens Schwarzbach# for bringing this up
RF: change fmri synthetic dataset to have origin inside the volume
BIG+BK+RF: update fmri dataset handling, with support for changing the orientations, proper dealing with nifti files without changing header information, and minor changes to BV functionality
ENH: better detection for AFNI being present
BF: show proper build message when using -force option
Merge branch 'master' into _orient