Update linearize.py defaults to block 279,000

contrib/linearize/example-linearize.cfg

@@ -7,6 +7,6 @@ port=8332
 
 # bootstrap.dat settings
 netmagic=f9beb4d9
-max_height=250000
+max_height=279000
 output=bootstrap.dat
 

contrib/linearize/linearize.py

@@ -117,7 +117,7 @@ if __name__ == '__main__':
 	if 'min_height' not in settings:
 		settings['min_height'] = 0
 	if 'max_height' not in settings:
-		settings['max_height'] = 250000
+		settings['max_height'] = 279000
 	if 'rpcuser' not in settings or 'rpcpass' not in settings:
 		print "Missing username and/or password in cfg file"
 		sys.exit(1)