channel: fix channel used for outgoing, fix off by 1 error, and use familiar (child_process) syntax for exec
channel: fix channel used for outgoing, fix off by 1 error, and use familiar (child_process) syntax for exec

Student007/ssh2,Drooids/ssh2,mscdex/ssh2,mafintosh/ssh2,jskirst/sftp-to-http,jskirst/sftp-to-http,mscdex/ssh2,ianscrivener/ssh2,laktek/ssh2-chromeify,onilabs/ssh2,mafintosh/ssh2,mafintosh/ssh2,onilabs/ssh2,laktek/ssh2-chromeify,24hr/ssh2,ArielAbreu/ssh2,mcanthony/ssh2,mscdex/ssh2,24hr/ssh2,laktek/ssh2-chromeify,ArielAbreu/ssh2,mscdex/ssh2,ianscrivener/ssh2,Drooids/ssh2,Student007/ssh2,mcanthony/ssh2