add new subdir to toplevel Makefile.am and fix lib/Makefile.am

This is necessary to make tarballs configure

[[Imported from SVN: r1923]]

Makefile.am

@@ -7,7 +7,7 @@ EXTRA_DIST= CMakeLists.txt dune.module dune-istl-config.cmake.in  dune-istl-vers
 # we need automake 1.9 or newer
 AUTOMAKE_OPTIONS = foreign 1.9
 
-SUBDIRS = cmake dune doc m4
+SUBDIRS = cmake dune doc lib m4
 
 # use configured compiler for "make distcheck"
 # doxygen is difficult to convince to build in a special directory...

lib/Makefile.am

@@ -2,6 +2,6 @@
 dunemodulelibdir=$(libdir)
 
 EXTRA_DIST = CMakeLists.txt duneistlam2cmake.lib
-dunemodulelib_DATA = duneistlam2cmake.li
+dunemodulelib_DATA = duneistlam2cmake.lib
 
 include $(top_srcdir)/am/global-rules