Fix behaviour to match RFC 6265 on encountering domain mismatch.
Make wget abort if --post-file does not exist

Signed-off-by: Darshit Shah <darnir@gmail.com>
Add test to ensure correct return code on --post-file failure

Signed-off-by: Darshit Shah <darnir@gmail.com>
warc: correctly write the field length in the skip length field
Merge branch 'master' into lua
New Lua callbacks: finish and before_exit.