Replace oppressive terms with inclusive terms.

[Arowa Suliman]

[PATCH 1/6] wpa_supplicant: Replace MITM with PITM.
[PATCH 2/6] wpa_supplicant: Replace Native with Built-in.
[PATCH 3/6] wpa_supplicant: Replace Sane with Valid.
[PATCH 4/6] wpa_supplicant: Replace Sanity with Validity.
[PATCH 5/6] wpa_supplicant: Replace Dummy with Stub.
[PATCH 6/6] wpa_supplicant: Replace Master with Main.