Upgrade project settings to Xcode 5.0

Remove the ARCHS build setting since Xcode suggests that as of version
5.0.

Signed-off-by: Marcus Karlsson <mk@acc.umu.se>
Use SSLCreateContext instead of SSLNewContext

SSLNewContext from Secure Transport is deprecated as of OS X 10.9 and
should be replaced with the newer SSLCreateContext API.

Signed-off-by: Marcus Karlsson <mk@acc.umu.se>
Remove deprecated Secure Transport APIs

The SSLSetAllowsAnyRoot and SSLSetEnableCertVerify APIs in Secure
Transport have been deprecated as of OS X 10.9. These API calls were
only used for testing purposes anyway so it should just be a matter of
removing them.

Signed-off-by: Marcus Karlsson <mk@acc.umu.se>