Avoid leading space in package name

By having an M4 line comment ("dnl") at the end of the line after the
comma, it seems that the indentation is included in the string on the
next line (it does not start at the escaping bracket).

This whitespace should be removed so the PACKAGE define can be used in
for instance filenames.

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.59])
-AC_INIT([OPM Core Library], [0.1], [atgeirr@sintef.no],dnl
+AC_INIT([OPM Core Library], [0.1], [atgeirr@sintef.no],
         [opmcore], [https://public.ict.sintef.no/opm/hg/opmcore])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])