libpq: Fix several function bindings having parameters with array type
libpq: Fix several function bindings having parameters with array type

Fixes bug 644308.

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