Prepare to release version 1.9.1

Author: eribertomota

configure.ac

@@ -21,7 +21,7 @@
 
 AC_PREREQ([2.69])
 
-AC_INIT([dcfldd],[1.9],[https://github.com/resurrecting-open-source-projects/dcfldd/issues])
+AC_INIT([dcfldd],[1.9.1],[https://github.com/resurrecting-open-source-projects/dcfldd/issues])
 AC_CONFIG_SRCDIR(src/dcfldd.c)
 AM_INIT_AUTOMAKE