mk_require_params — Check for missing keyword parameters
mk_require_params
funcname
params..
Checks that each variable in params
is
not the empty string or fails with an error message.
The provided funcname
will be used in the
message to identify to the user which function expected
the missing parameter.
This function is intended for use after
mk_parse_params
in order to verify
that all non-optional parameters were passed.