add container_of() macro

to be used to remove cast abuse and finding parent structs later

Signed-off-by: Alejandro Mery <amery@geeks.cl>
libev: clean cast abuse

assuming that you can cast to the first field of an struct is very
risky

Signed-off-by: Alejandro Mery <amery@geeks.cl>
README: fix coverity link

coverity link was pointing to the wrong project

Signed-off-by: Alejandro Mery <amery@geeks.cl>
client: fix verification of the accepted protocol

to properly take ", *" as delimiter

Signed-off-by: Alejandro Mery <amery@geeks.cl>