CREDIT AGREEMENT among UBS M2 FUND, L.L.C. UBS PW EQUITY OPPORTUNITY FUND, LIMITED UBS EVENT & EQUITY FUND, L.L.C. UBS CREDIT AND RECOVERY FUND, L.L.C. UBS MASTERS FUND, L.L.C. UBS HEALTH SCIENCES FUND, L.L.C. UBS TECHNOLOGY PARTNERS, L.L.C. UBS...