vala: Make sure the namespace is SocialWebClient and not Sw
vala: Make sure the namespace is SocialWebClient and not Sw

Recent vapigen versions seems to think that the namespace should be Sw,
despite the .gir file saying that the namespace is SocialWebClient.

GNOME/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,GNOME/libsocialweb,lcp/libsocialweb,lcp/libsocialweb,GNOME/libsocialweb,lcp/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,ThomasBollmeier/libsocialweb-flickr-oauth