Commit the rewrite of tail by Allen Soard

<esp-software@mail.hypermart.net>.  Thanks Allen for
you work at getting this into shape,
 -Erik

Changelog

@@ -6,6 +6,9 @@
 	    'make install-hardlinks' target to (tada) install hardlinks.
 	* syslogd can now log messages to a remote host -- patch thanks
 	    to Gyepi Sam <gyepi@praxis-sw.com>
+	* Rewrite of 'tail' to make it simpler, smaller, and more robust.  
+	    It now weighs only 2.25k (3k when full featured).  The code it
+	    much cleaner, thanks to "Allen Soard" <esp-software@mail.hypermart.net>
 
 
 	 -Erik Andersen

busybox.def.h

@@ -190,8 +190,8 @@
 // enable syslogd -R remotehost
 #define BB_FEATURE_REMOTE_LOG
 //
-//Simple tail implementation (2k vs 6k for the full one).  Still
+//Simple tail implementation (2.25k vs 3k for the full one).
-//provides 'tail -f' support -- but for only one file at a time.
+//Both provide 'tail -f' support (only one file at a time.)
 #define BB_FEATURE_SIMPLE_TAIL
 //
 // Enable support for loop devices in mount