Use normal naming convention for test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48693 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/GVN/2008-02-12UndefLoad.ll b/test/Transforms/GVN/2008-02-12-UndefLoad.ll
similarity index 100%
rename from test/Transforms/GVN/2008-02-12UndefLoad.ll
rename to test/Transforms/GVN/2008-02-12-UndefLoad.ll