By Muvija M LONDON (Reuters) -An Abu Dhabi-backed group has tweaked its takeover plan for Britain’s Telegraph newspaper, prompting another round of government scrutiny and a scolding from a minister over the last-minute changes. Growing alarm over possible foreign meddling in editorial matters at the politically influential, right-leaning title led media minister Lucy Frazer to step in last year and order a regulatory probe on public interest grounds into the deal proposed by RedBird IMI. The titles, technically still owned by the Barclay family after RedBird IMI helped pay back its 1.2 billio…