[MERGE] merged recent changes from the trunk and adapted build system.

[[Imported from SVN: r1783]]

doc/CMakeLists.txt

 add_subdirectory("doxygen")
-add_subdirectory("comm")
 if(LATEX_USABLE)
   ADD_LATEX_DOCUMENT(istl.tex FATHER_TARGET doc
     BIB_FILES istl.bib  DEFAULT_SAFEPDF IMAGES blockstructure.eps)

doc/Makefile.am

 # $Id$
 
-SUBDIRS = doxygen comm
+SUBDIRS = doxygen
 
 TEXSOURCES = istl.tex istl.bib
 EPSFILES = blockstructure.eps