Revert r108672, "Implement support for reading arguments specified in a file
with @file.", it doesn't correctly handle cases where arguments starting with
'@' are passed to other command line arguments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108686 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed