posix: Add readlink(2) and ttyname_r(3)
posix: Add readlink(2) and ttyname_r(3)

Signed-off-by: Michael 'Mickey' Lauer <94b327e99abc3aa97363840c77d9a097d094d304@vanille-media.de>

flobrosch/vala-fixes,spidermonkdust/vala,flobrosch/vala-fixes,playya/vala,themiwi/vala,frida/vala,playya/vala,lovebug356/vala,spidermonkdust/vala,themiwi/vala,phako/vala,Distrotech/vala,severinh/vala,jessevdk/vala,GNOME/vala,GNOME/vala,frida/vala,Jc2k/vala,Jc2k/vala,severinh/vala,Distrotech/vala,kamanashisroy/aroop,kamanashisroy/aroop,tjol/vala-tjol,GNOME/vala,jessevdk/vala,jessevdk/vala,frida/vala,rvu95/vala,frida/vala,themiwi/vala,rvu95/vala,tjol/vala-tjol,severinh/vala,spidermonkdust/vala,rvu95/vala,frida/vala,phako/vala,flobrosch/vala-fixes,xdave/pvala,kamanashisroy/aroop,GNOME/vala,tjol/vala-tjol,lovebug356/vala,playya/vala,Distrotech/vala