Update config.c

Fix bug in configGetCommand function: get correct masterauth value.
Test: obuf-limits test false positive removed.

Fixes #621.
redis-trib: initial output colorization
redis-trib: Don't use colorization if TERM != xterm.
Cluster: set node role on successful handshake.
redis-trib: wait cluster join after cluster creation.
Cluster: when slave changes master, remove it from the old master.
Merge pull request #1003 from NanXiao/patch-3

Update config.c