lexer.d: nesting delimited strings support.
lexer.d: nesting delimited strings support.

deadalnix/SDC,carlor/SDC,sidmutha/SDC,sidmutha/SDC,UplinkCoder/SDC,schancel/SDC,SDC-Developers/SDC,SDC-Developers/SDC,bpr/SDC,SDC-Developers/SDC,deadalnix/SDC,schancel/SDC,JohanEngelen/SDC,JohanEngelen/SDC,sidmutha/SDC,bpr/SDC,deadalnix/SDC,JohanEngelen/SDC,bpr/SDC,DmitryOlshansky/SDC,UplinkCoder/SDC,UplinkCoder/SDC,DmitryOlshansky/SDC,schancel/SDC,DmitryOlshansky/SDC