Revert "Revert "llvm-strings: support printing the filename""

Change the dynamic files to static in the hope that it will actually fix the
transient errors that Ive been unable to reproduce.

llvm-svn: 286891
diff --git a/llvm/test/tools/llvm-strings/Inputs/abcd b/llvm/test/tools/llvm-strings/Inputs/abcd
new file mode 100644
index 0000000..85df507
--- /dev/null
+++ b/llvm/test/tools/llvm-strings/Inputs/abcd
@@ -0,0 +1 @@
+abcd
\ No newline at end of file