Aligned the WSM backend with coding style
Added a method to copy weston config structs
Adapted ini files a bit to the new default exec and fixed a section mistake in most of the bogus ini files
Default backend can now select the most appropriate policy for a client
Differentiated UID 0 from the "Default" UID in the default backend
Improved the filtering of the .ini file filter to ignore non .ini files
Improved the code that verifies the Exec line in policy loading to refuse obvious non-absolute paths and better inform the user about errors