Replace all copyright info
--------------------------
1. Edit repl.txt
2. Make sure ls, gawk and mv programs are available from command line
3. For each src subdirectory:
   a. cd into directory
   b. ls -1|xargs -I {} echo "gawk -f ../repl.awk {}>{}.1">x.bat
   c. ls -1|xargs -I {} echo "mv -f {}.1 {}">y.bat
   d. x.bat
   e. y.bat
   f. rm x.bat y.bat