When I switched execution over to execWith* functions I failed to
account for the use of CalledProcessError in various places. This
patch restores that behavior. All places that used check_call or
check_output now pass raise_err=True to the execWith* call.
Switch to using execWith* so that the command and its output can be
logged. To capture the output setup a logger named "program"
livemedia-creator captures all of this into program.log
This adds the remove() function, which works a lot like rm -rf - if you
remove() a file, it uses os.unlink, and if you remove() a directory it
uses shutils.rmtree().
The way we create the images had to be changed a little.
Some code had to be moved to other places, so we can create
images for other architectures too.
Create the directories in advance to copying files,
not later, becase this caused some destination path
problems, like not appending the filename to the
destination directory, because it didn't exist.
