* Added initial builtin-support for a subset of Cuba

This has not been tested too much (so it might be better not to build the BMWlibs at the moment)
  In case shared library support will become available from T. Hahn, this support will be dropped again.

* Added a few " " to musrgui (calls to musrview, musrt0 and msr<->mlog)
  These are needed in the simple system commands to support paths with spaces and other strange things... :-(

src/external/Makefile.am

@@ -2,6 +2,10 @@ if BUILD_ASLIBS
   ASDIRS = Nonlocal
 endif
 
+if BUILD_CUBALIB
+  CUBADIRS = libCuba
+endif
+
 if BUILD_BMWLIBS
   BMWDIRS = TFitPofB-lib \
             libLFRelaxation \
@@ -9,4 +13,4 @@ if BUILD_BMWLIBS
             libCalcMeanFieldsLEM 
 endif
 
-SUBDIRS = $(ASDIRS) $(BMWDIRS)
+SUBDIRS = $(ASDIRS) $(CUBADIRS) $(BMWDIRS)