* fixed html errors

[[Imported from SVN: r4621]]

[[Imported from SVN: r4597]]

[[Imported from SVN: r4595]]

[[Imported from SVN: r4591]]

For make install we try to build the doxygen documentation anyway as 
I currently see no way around this.

[[Imported from SVN: r4590]]

[[Imported from SVN: r4588]]

[[Imported from SVN: r4587]]

when building the distribution tarfile use shortnames for doxygen and long names for the web-install.

[[Imported from SVN: r4584]]

[[Imported from SVN: r4582]]

[[Imported from SVN: r4581]]

[[Imported from SVN: r4580]]

[[Imported from SVN: r4579]]

[[Imported from SVN: r4565]]

[[Imported from SVN: r4563]]

[[Imported from SVN: r4562]]

Doxygen now creates files with short names as tar has problems with long names (those with more than 99
characters!) that doxygen creates by default.
The doxygen documentation now gets installed too!

[[Imported from SVN: r4561]]

[[Imported from SVN: r4553]]

[[Imported from SVN: r4542]]

[[Imported from SVN: r4541]]

[[Imported from SVN: r4540]]

[[Imported from SVN: r4539]]

[[Imported from SVN: r4538]]

[[Imported from SVN: r4535]]

[[Imported from SVN: r4534]]

[[Imported from SVN: r4533]]

[[Imported from SVN: r4532]]

[[Imported from SVN: r4522]]

[[Imported from SVN: r4520]]

[[Imported from SVN: r4518]]

[[Imported from SVN: r4516]]

[[Imported from SVN: r4515]]

[[Imported from SVN: r4512]]

[[Imported from SVN: r4507]]

[[Imported from SVN: r4499]]

[[Imported from SVN: r4495]]

#if HAVE_MPI
// code
#endif

[[Imported from SVN: r4316]]

[[Imported from SVN: r4309]]

[[Imported from SVN: r4291]]

[[Imported from SVN: r4272]]

[[Imported from SVN: r4158]]