Duane Ellis <openocd@duaneellis.com>

 improve error message in Jim when sourcing a file fails.
Previously it did not tell you the CWD Jim was using as its reference point.
(Helpful when script filenames are a relative path)

git-svn-id: svn://svn.berlios.de/openocd/trunk@840 b42882b7-edfa-0310-969c-e2dbd0fdcd60