kernel-snapshot: update to 3.0.0-rc4.

srcpkgs/kernel-snapshot/template

@@ -12,15 +12,25 @@ _kernel_headers_revision=${revision}
 _kernel_snapshot=yes
 _kernel_ver=3.0
 _kernel_ver_minor=0
-_kernel_patch_ver=rc3
+_kernel_patch_ver=rc4
 version=${_kernel_ver}.${_kernel_ver_minor}${_kernel_patch_ver}
 short_desc="The Linux kernel and modules"
 wrksrc="linux-${_kernel_ver}-${_kernel_patch_ver}"
 distfiles="${KERNEL_SITE}/kernel/v3.0/testing/linux-${_kernel_ver}-${_kernel_patch_ver}.tar.bz2"
-checksum=346e008b0043b1275ce4fa67ffdeb872136c0e8a5d6ddfe9855928646756cbbd
+checksum=b3b0aa31f6a461562157aefefcb2b6651a9d0550da96996cfb1b8c87ac77c3ac
 subpackages="$pkgname-headers"
 noverifyrdeps=yes
 
+if [ -n "${_kernel_snapshot}" ]; then
+	_kernver="${_kernel_ver}.${_kernel_ver_minor}-${_kernel_patch_ver}"
+else
+	_kernver=${version}
+fi
+
+if [ -n "$revision" ]; then
+	_kernver="${_kernver}_${revision}"
+fi
+
 Add_dependency run linux-firmware
 Add_dependency run initramfs-tools
 Add_dependency build perl		">=0"