Blender Git Loki

Bugfix #17524

The problem is that the audio_fill_seq function try to load the hd file
if the sequence don't have it, but it join the two string (directory path +
file path) without the / (Linux... Windows), so the result is a wrong path.

I change the the strncpy and strncat function for a BLI_join_dirfile (like
the reload_sequence_new_file) and all work fine now.

Also note that the "them go" that Luca report is (or what happen here) the
ctrl+z function, and now both case work fine here.

(interesting.. date from Feb 05.. 2006 ;)