Workaround autoreconf removing the setting of $(GETTEXT_PACKAGE) in

--- libvisual-0.4.0/po/Makevars 2016-10-07 10:52:34.532032488 -0700

+++ libvisual-0.4.0/po/Makevars 2016-10-07 10:52:48.854073483 -0700

@@ -1,7 +1,7 @@

# Makefile variables for PO directory in any package using GNU gettext.

# Usually the message domain is the same as the package name.

-DOMAIN = $(GETTEXT_PACKAGE)

+DOMAIN = libvisual-0.4

# These two variables depend on the location of this directory.

subdir = po