* Add FileOps::fileName() to get the base name for a file
* Add ProcessUtils::runSync() to run a process, wait for it to exit and then
return the status code from that process.
* Change ProcessUtils::runAsyncUnix() to use execvp() in order to search PATH
for the specified binary if the filename is not absolute.
Prepend the install directory to the file path specified in the
<uninstall> section of the XML file to get the path of the file
to remove.
If the file cannot be uninstalled because it does not exist,
log a warning and continue.
The cleanup is currently run in another process - on Windows for this to
work the updater will need to be run from outside the temporary installation
directory. Running the cleanup from the updater binary in the temporary
directory will fail since the binary to be removed will then be in use.
On Linux, Mac the cleanup could just be run from the main update installation
process.
This test compiles two 'versions' of an application,
then runs a script which creates an install directory containing
the 'old' app and a directory containing a file_list.xml update script,
a copy of the updater and a zip file containing the 'new' app.
The script then runs the updater, then runs the installed app
and checks that it is the new version.
* Add ProcessUtils::currentProcessPath() to get the path to the current application
and add a Linux implementation.
* Implement ProcessUtils::runAsync() on Unix using fork/execve.
* Setup updater to run the main installation phase with the correct arguments.
* Add '.zip' to the package name to get the path of the package file.
