Warn if initdb's --sync-only option is mixed with other options

When Who What
2021-10-01 11:22:32 Daniel Gustafsson (d_gustafsson) Closed in commitfest 2021-09 with status: Returned with feedback
2021-07-26 08:26:13 Kamalpriya Bharath (kambhara.visa.com) Removed kambhara.visa.com from reviewers
2021-07-26 08:25:59 Kamalpriya Bharath (kambhara.visa.com) Added kambhara.visa.com as reviewer
2021-07-07 20:49:18 Daniel Gustafsson (d_gustafsson) Added d_gustafsson as reviewer
2021-07-07 02:26:41 Gurjeet Singh (gurjeet) Changed authors to Gurjeet Singh (gurjeet)
2021-07-07 02:26:23 Gurjeet Singh (gurjeet) Attached mail thread CABwTF4VJW1m4Vg5NzMcfbhWUfs4Vz0yZdF1xseJ_QhE-J-O8MA@mail.gmail.com
2021-07-07 02:26:23 Gurjeet Singh (gurjeet) Created patch record