(First of two parts) LEGAZPI CITY — Lifting his gaze and taking a deep breath, Antonio Martillana’s weariness is unmistakable. From afar, Mt. Mayon looms large over Barangay Budiao, where the 61-year-old Martillana and his family live. The village, located at the foot of Mayon, teems with flora and fauna, both rare and endemic, that