## PIJ - Run process tree in a job and wait for completion.

## Usage
`pij my-program.exe arguments...`

## Purpose
Use it when you want to run `my-program.exe` in a batch file, but
my-program.exe starts another process(es) and returns before they
complete, which is not what you want: batch file should continue only
when all additional processes also exit. PIJ runs initial process in a
job and waits for this job to become empty, before exiting.

## Result code (ERRORLEVEL)
PIJ terminates with non-zero exit code if there's some problem during
initial process creation or waiting phase. Zero exit code is returned
when the last process in the job exits.

## Restrictions
All arguments are passed to CreateProcess'es lpCommandLine, hence some
restrictions on what you can start: it should be a real EXE file
(please start cmd.exe if you want to run another batch file), standard
directories and PATH are used, registry AppPaths aren't.

## Author
Written by Anton Kovalenko <anton@sw4me.com>. My code is public domain.
Uses some code by Raymond Chen.