patch 8.0.1742: cannot get a list of all the jobs

Problem:    Cannot get a list of all the jobs.  Cannot get the command of
            the job.
Solution:   When job_info() is called without an argument return a list of
            jobs.  Otherwise, include the command that the job is running.
            (Yegappan Lakshmanan)
diff --git a/src/proto/channel.pro b/src/proto/channel.pro
index dcf29b8..2505df5 100644
--- a/src/proto/channel.pro
+++ b/src/proto/channel.pro
@@ -68,5 +68,6 @@
 job_T *job_start(typval_T *argvars, char **argv_arg, jobopt_T *opt_arg);
 char *job_status(job_T *job);
 void job_info(job_T *job, dict_T *dict);
+void job_info_all(list_T *l);
 int job_stop(job_T *job, typval_T *argvars, char *type);
 /* vim: set ft=c : */