one header file per line

[[Imported from SVN: r4415]]

dune/solvers/iterationsteps/Makefile.am

 SUBDIRS =
 
 iterationstepsdir = $(includedir)/dune/solvers/iterationsteps
-iterationsteps_HEADERS = amgstep.hh blockgsstep.hh blockgsstep.cc iterationstep.hh \
-          lineariterationstep.hh linegsstep.hh linegsstep.cc \
+iterationsteps_HEADERS = amgstep.hh \
+                         blockgsstep.hh \
+                         blockgsstep.cc \
+                         iterationstep.hh \
+                         lineariterationstep.hh \
+                         linegsstep.hh \
+                         linegsstep.cc \
                          minimalpolynomialextrapolationstep.hh \
                          mmgstep.hh mmgstep.cc \
-          multigridstep.hh  multigridstep.cc \
-          projectedblockgsstep.hh projectedblockgsstep.cc projectedlinegsstep.cc projectedlinegsstep.hh \
+                         multigridstep.hh \
+                         multigridstep.cc \
+                         projectedblockgsstep.hh \
+                         projectedblockgsstep.cc \
+                         projectedlinegsstep.cc projectedlinegsstep.hh \
                          richardsonstep.hh \
                          truncatedblockgsstep.hh \
-           truncatedsaddlepointgsstep.hh  trustregiongsstep.cc  trustregiongsstep.hh
+                         truncatedsaddlepointgsstep.hh \
+                         trustregiongsstep.cc \
+                         trustregiongsstep.hh
 
 include $(top_srcdir)/am/global-rules