[tex-live] TL2018 runscript problem

[Linas Stonys]

Hi,
runscript with my local programs doesn't work any more.
They are in TEXMFLOCAL and used to work well with TL2016. Now I'm 
getting error:
d:\texroot\2018\bin\win32\runscript.tlu:815: 
d:\texroot\2018\bin\win32\runscript.tlu:770: no appropriate script or 
program found: setmd5info
  Problem appears because of  os.setenv('TEXMF', TEXMFDIST):

"""""""""""""""""
if not ARGV then
*os.setenv('TEXMF', TEXMFDIST)*
   local extlist = 
'.tlu;.texlua;.pl;.lua;.rb;.py;.tcl;.jar;.vbs;.js;.bat;.cmd;\0'
   local progfullname = search_path(progname, BINDIR, '.tlu;.bat;.cmd') or
                        assert(find_texmfscript(progname, extlist))
   os.setenv('TEXMF', nil)
"""""""""""""""""

Linas
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