ctags plugin: write tags file incrementally, avoding tempfile
ctags plugin: write tags file incrementally, avoding tempfile

that was supposed to happen before to, thanks to a redirection, but apparentlly
ctags invariably uses a temporarily file when asked to write to stdout :-/ (and
it's even documented!)

sophiejjj/debsources,zacchiro/debsources,matthieucan/debsources,vivekanand1101/debsources,Debian/debsources,zacchiro/debsources,Debian/debsources,sophiejjj/debsources,matthieucan/debsources,devoxel/debsources,oorestisime/debsources,devoxel/debsources,vivekanand1101/debsources,zacchiro/debsources,vivekanand1101/debsources,oorestisime/debsources,zacchiro/debsources,clemux/debsources,sophiejjj/debsources,clemux/debsources,nonas/debian-qa,sophiejjj/debsources,clemux/debsources,vivekanand1101/debsources,clemux/debsources,zacchiro/debsources,matthieucan/debsources,clemux/debsources,nonas/debian-qa,matthieucan/debsources,Debian/debsources,vivekanand1101/debsources,nonas/debian-qa,devoxel/debsources,nonas/debian-qa,devoxel/debsources,oorestisime/debsources,sophiejjj/debsources,devoxel/debsources,Debian/debsources,Debian/debsources,matthieucan/debsources,oorestisime/debsources,oorestisime/debsources