Variables:

   VERBOSE=0-5 or on/off.  
      The thinking here is that different levels of verbosity could be
      specified for procmail logs.  1 would provide minimal logging,
      while 5 would be everything (as is now).  If the value is 
      on/off, it defaults to 5/0.

   VERSION                                                     *DONE* cl

      Variable to find version number

   RCDEPTH

      Variable to find current level of RCFILE
   
   EXITRC

      Exit the current rcfile and continue with the previous one

	MSGSIZE

	   Size of the current message in bytes

Regular expressions:

   Support for \n, \t, and \s.
   {n, m} support
   backreferences to paranthesized subexpressions (eliminate $MATCH)

Features:

   Restricted access to binaries (smrsh-equivalent)            *DONE* cl
   Don't do the comsat thing when delivering to a command
   Have a 'procmail -V' or something -- display all defaults
      for a given binary (since they're changeable in
      config.h anyhow)
   Y2K certification
   Make LINEBUF a readable variable (why have the exception?)
   Allow \ for continuation of newlines
   Allow $1 to be accessed directly
   Add storage to disk option instead of loading large messages
      into memory

Bug fixing:

   Fix MATCH bug                                               *DONE* pg
   Fix LINEBUF overflow problems                               *DONE* pg
   Fix RESTRICT_EXEC (basically add a ';')                     *DONE* cl
   Memory allocation in BSD-stye OSs