Fix a long standing irk, these files need to be installed

  Fix a long standing irk, these files need to be installed
  in each and every nmake -f makefile.win INSTDIR={target}
  location.  Modify extentions to .txt to make things easy
  on Win32 users.

  These are the same files (with original extentions) that
  the win32 installer has created for some time.  It will
  also make comparing the target with the installed trees
  simpler, and let us add .txt extensions to the other
  criticial files in the 1.3.29 installer packages.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@100700 13f79535-47bb-0310-9956-ffa450edef68