Rename _main to _vala_main to avoid conflicts
Rename _main to _vala_main to avoid conflicts

Fixes bug 582540.

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