Significant changes, both bugfixes and best practice changes, to smb-psexec.nse. Primarily:

o It no longer uses the global environment to store the modules table
o It now uses loadfile() to load the configuration files, which follows best practices better
o The module() line at the top of the configuration files is no longer required, but if it exists all that happens is a warning is printed
o Worked around what appears to be a bug in one person's Nmap install where absolute paths didn't resolve properly -- I couldn't replicate, but he confirmed it was fixed

nselib/data/psexec/default.lua

@@ -1,4 +1,3 @@
-module(... or "network", package.seeall)
 ---This is the default configuration file. It simply runs some built-in Window
 -- programs to gather information about the remote system. It's intended to be 
 -- simple, demonstrate some of the concepts, and not break/alte anything.