Uppdaterat OpenModelicaSystem.doc and .pdf and OpenModelicaUsersGuide…

….doc and .pdf for release 1.4.3 with updated author list and release notes. OpenModelicaSystem also updated the module interaction figures and added 3 short module descriptions for the patternmatch compilation.

OpenModelicaMetaProgramming.doc and .pdf also updated somewhat, e.g. to reflect that if-expressions now work.

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk/doc@2844 f25d12d1-65f4-0310-ae8a-bbce733d8d8e