By popular demand, when LNT nt fails while running a subprocess command, make sure the error message which is printed has the name of the log file which contains the output of the failing command.


git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@195506 91177308-0d34-0410-b5e6-96231b3b80d8
By request, add a --verbose option to LNT nt, which prints out what all the sub-commands are doing while also logging their output to a file.


git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@195509 91177308-0d34-0410-b5e6-96231b3b80d8