lklhaikufs: features galore

The LKL-based Haiku driver has progressed well in the last few weeks.

The set of features already implemented:

mounting and unmounting ext3, ext4 disk images*, both read-only and read-write

listing file system attributes (read-only/read-write, file system size, number of files created, number of files remaining to be created, etc.)

browsing the contents of any folder on the file system

listing file permissions, owner, group, type (directory, symlink, regular file, etc.)

opening/closing existing files, and creating new files

new files reading and writing data into files

data into files creating new directories

What still needs to be done:

renaming files

deleting files and directories