In build_symbolizer.sh we can safely remove the -eu argument from the shebang (which is an unportable construct), as the scripts sets **-e** and **-u** already.
Differential Revision: https://reviews.llvm.org/D110039
De-hardcode path to TSan-ified executable: pass it as an input to
the scripts. Fix them so that they don't write to the current
directory. Remove their invocation from Makefile.old: they are
broken there anyway, as check_analyze.sh now matches trunk Clang.
llvm-svn: 254936