place each header on a separate line, and sort them alphabetically

[[Imported from SVN: r6714]]

dune/gfe/Makefile.am

@@ -5,12 +5,24 @@ SUBDIRS =
 AM_CPPFLAGS = @AM_CPPFLAGS@ -I$(top_srcdir)/..
 
 srcincludedir = $(includedir)/dune/common
-srcinclude_HEADERS = averagedistanceassembler.hh localgeodesicfefunction.hh \
-                     quaternion.hh geodesicfefunctionadaptor.hh averageinterface.hh \
-                     localgeodesicfestiffness.hh riemanniantrsolver.hh rodwriter.hh \
-                     geodesicdifference.hh makestraightrod.hh rigidbodymotion.hh \
-                     rotation.hh geodesicfeassembler.hh maxnormtrustregion.hh \
-                     rodassembler.hh svd.hh harmonicenergystiffness.hh \
-                     rodlocalstiffness.hh  targetspacertrsolver.hh
+srcinclude_HEADERS = averagedistanceassembler.hh \
+                     averageinterface.hh \
+                     geodesicdifference.hh \
+                     geodesicfeassembler.hh \
+                     geodesicfefunctionadaptor.hh \
+                     harmonicenergystiffness.hh \
+                     localgeodesicfefunction.hh \
+                     localgeodesicfestiffness.hh \
+                     makestraightrod.hh \
+                     maxnormtrustregion.hh \
+                     quaternion.hh \
+                     riemanniantrsolver.hh \
+                     rigidbodymotion.hh \
+                     rodassembler.hh \
+                     rodlocalstiffness.hh \
+                     rodwriter.hh \
+                     rotation.hh \
+                     svd.hh \
+                     targetspacertrsolver.hh
 
 include $(top_srcdir)/am/global-rules