Bump version to 1.19.0, update copyright year in help message

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 1bc45c4..8157b4f 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -627,7 +627,7 @@
 		full_write2_str(bb_banner); /* reuse const string */
 		full_write2_str(" multi-call binary.\n"); /* reuse */
 		full_write2_str(
-			"Copyright (C) 1998-2009 Erik Andersen, Rob Landley, Denys Vlasenko\n"
+			"Copyright (C) 1998-2011 Erik Andersen, Rob Landley, Denys Vlasenko\n"
 			"and others. Licensed under GPLv2.\n"
 			"See source distribution for full notice.\n"
 			"\n"