Add central copydir script

Many Chemistry packages leverage a central copydir.cmd script which is a wrapper around robocopy

marked this issue as related to #142 (closed)

marked this issue as related to #200

• tweak chem script to check for trailing slash on args and strip if necessary (see comment in copydir.cmd)
• review setting of error level to actually return zero/non-zero on success/failure
• use %WPKGLOGDIR% instead of c:\netinst

assigned to @alt36

error levels reviewed per https://ss64.com/nt/robocopy-exit.html

    0×00   0       No errors occurred, and no copying was done.
                   The source and destination directory trees are completely synchronized. 

    0×01   1       One or more files were copied successfully (that is, new files have arrived).

so our copydir.cmd script is now tweaked to exit with status 0 if the return code of robocopy is either 0 or 1. The higher error codes indicate some sort of failure so we let those bubble through as-is

closed