[driver - crash diagnostics] Convert the flags back to an array of strings and use
array_lengthof.  Also, append the new filename with correct preprocessed suffix.
Last part of rdar://11285725


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156117 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed