fix buid for rpm v5

OBS-URL: https://build.opensuse.org/package/show/openSUSE:Tools/build?expand=0&rev=153

build.spec

@@ -23,10 +23,10 @@ License:        GPLv2+
 Group:          Development/Tools/Building
 AutoReqProv:    on
 Summary:        A Script to Build SUSE Linux RPMs
-Version:        2011.10.10
+Version:        2011.10.25
 Release:        0
 #!BuildIgnore:  build-mkbaselibs
-Source:         build-%{version}.tar.gz
+Source:         obs-build-%{version}.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildArch:      noarch
 # Manual requires to avoid hard require to bash-static
@@ -90,7 +90,7 @@ for generating delta rpm packages.
 %endif
 
 %prep
-%setup -q
+%setup -q -n obs-build-%version
 
 %build