Some minor fixes for warnings thrown up by Xcode 4.4.1.
Not sure about the 10.6 sdk change for the unit tests, but I think the others are all safe for older Xcodes too.
fixed warnings about missing return types
xcode automatic settings updates; also switch Thai translation's enco…
…ding to utf-16 as xcode said that's what it actually was
fixed warning about SUUpdateAlert positioning for Brazilian translation
switched unit test sdk to macosx instead of macosx10.6, since 10.6 sd…
…k is not present on later xcodes
This Tai encoding warning was strange, in my case, file already has Default encoding (UTF-16) chosen in File Inspector, but only selecting explicitly UTF-16 (and reinterpreting file's content) removed a warning from Xcode 4.4.1.
@piobyz I've seen that before recently, must be a bug I presume with Xcode 4.4.1.
This has been fixed