Revert 251640ab575634256de6d6fde5c5359fe21efe91 which fixed the wrong thing.
While here, add `2>&1 | count 0` to assert no warning from lib/DebugInfo/DWARF.
gdb-index-multiple-cu-2.s puts the symbol in question to another object file %t1.o, so that its CuIndex is affected by the number of CUs in %t.o
Also change `Kind:` in a comment to `Attributes:` as a follow-up of D54480 and D54481
llvm-svn: 346796