get_current_dir_name not supported on Mac (Commit #5e6ceeb)

[jtamir]

Commit #5e6ceeb broken on Mac, get_current_dir_name not supported
https://github.com/mrirecon/bart/blob/master/src/misc/mmio.c#L710

Alternative: getcwd

[jtamir]

This works but I don't write any C code any more so I don't know what your preference is for defining a certain size:

char dir[256];
getcwd(dir, sizeof(dir));

[schaten]

Hi, this should be fixed with ab1715f.