grep 3.8 emits warnings when egrep is called, so fix the one place where we use it (closes #461)

Author: warrickball

adipls/adipack.c/bin/get-input

@@ -1,4 +1,4 @@
 #!/bin/bash
 #  get input from file in $1
 #  input lines are marked with a '#' or a '@' at the end
-egrep '# *$|@ *$' "$1" | sed -e 's/ *[#,@] *$//'
+grep -E '# *$|@ *$' "$1" | sed -e 's/ *[#,@] *$//'