cmake: more necessary files added. Still a lot of testing needed.

src/external/CMakeLists.txt

@@ -0,0 +1,26 @@
+if (ASlibs)
+  add_subdirectory(Nonlocal)
+  add_subdirectory(MagProximity)
+  add_subdirectory(libPhotoMeissner)
+  add_subdirectory(libSpinValve)
+endif (ASlibs)
+
+if (BMWlibs)
+  add_subdirectory(libCuba)
+  add_subdirectory(BMWtools)
+  add_subdirectory(libCalcMeanFieldsLEM)
+  add_subdirectory(libFitPofB)
+  add_subdirectory(libGapIntegrals)
+  add_subdirectory(libLFRelaxation)
+  add_subdirectory(libZFRelaxation)
+endif (BMWlibs)
+
+add_subdirectory(mud)
+add_subdirectory(MusrRoot)
+add_subdirectory(TLemRunHeader)
+add_subdirectory(MuSR_software)
+
+if (nexus)
+  add_subdirectory(nexus)
+endif (nexus)
+