Fix generic type resolution with nested generic types in base types
Fix generic type resolution with nested generic types in base types

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