R-0.90.1 buglet in R shell (PR#375)

[William.Venables@cmis.CSIRO.AU]

I recently took "." off my PATH for security reasons and now find
that R does not work in my home directory where the .Renviron
file resides.

The fix is simple.  In the R shell startup section replace
". .Renviron" by ". ./.Renviron".  The relevant section is:

# Startup
if ${USE_R_ENVIRON}; then # use the one in current dir, or default
  if [ -r .Renviron ]
  then . ./.Renviron      # <<-- change
  else [ -r ${R_ENVIRON} ] && . ${R_ENVIRON}
  fi
fi

-- 
-----------------------------------------------------------------
Bill Venables, Statistician, CMIS Environmetrics Project.

Physical address:                            Postal address:
CSIRO Marine Laboratories,                   PO Box 120,       
233 Middle St, Cleveland, Queensland         Cleveland, Qld, 4163
AUSTRALIA                                    AUSTRALIA

Telephone: +61 7 3826 7251     Email: Bill.Venables@cmis.csiro.au     
      Fax: +61 7 3826 7304

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