(datarootdir): Explain why we add an unused variable.

diff --git a/Makefile.in b/Makefile.in
index 9a613be..38835db 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,4 +1,5 @@
 prefix = @prefix@
+# Avoid "WARNING:  Makefile.in seems to ignore the --datarootdir setting":
 datarootdir = @datarootdir@
 datadir = @datadir@
 lispdir = @lispdir@