CREDIT AGREEMENT by and among REMY INTERNATIONAL, INC., WESTERN REMAN INDUSTRIAL, INC., POWER INVESTMENTS, INC., REMY ELECTRIC MOTORS, L.L.C., REMAN HOLDINGS, L.L.C., REMY INDIA HOLDINGS, INC., REMY TECHNOLOGIES, L.L.C., REMY KOREA HOLDINGS, L.L.C.,...