(Reuters)-AsalesrepresentativeforMerck&Co.filedamorethan$100millionsexdiscriminationlawsuitagainstthedrugmakeronThursday,claimingthatitparticularlydiscriminatesagainstpregnantemployeesandwomenwithchildren.Theplaintiff,KelliSmith,inalawsuitfiledinU.S.DistrictCourtinNewJersey,claimsshewasdemotedfortakingmaternityleavein2010,andpenalizedbyunfairperformanceevaluationsandotheractionst...