Added first version of wsh-killer
Merge branch 'develop' into wsh-killer
Launch the wsh-killer when running all commands:
Kill all g_environ_getenv() hacks

There used to be a hack to add support for g_environ_getenv()
in older versions of glib. Now that we're always calling wsh-killer
from a known path, we don't need to care about this dumb hack anymore.
Kill headers for write_\*
Kill header defs of wsh_check/write*
Kill filtering
Kill missed remnants of filter purge
Don't install internal headers
Added Ross as an author
This has no business being in here
Run commands using the user's shell
Still search path for sudo