add pscheck module and call to entry point
First try at a psutil based process checker
Rearrange the try statement
Try using p.exe instead of the open files
realpath, not relpath
Update the error message
Change the default answer to no if processes are running
Make pscheck.main() return True on OK and False on not OK
Don't check the Python that conda is running in

I don't actually know if this works until Monday when I can test it on Windows
again.
for backwards compatibility, use "requires" when "depends" is not there
update changelog
refactor share module to use new install api function
minor simplification in install_local_packages()
use config module
add note to new build readme
Check os.getpid() instead of sys.executable
Print full command of process
Fix typo
Improved smoketest script, made logging optional.
Make error message a little clearer to users