- interim release w11a_V0.562 (untagged)

- C++ and Tcl based backend server: many support classes for interfacing to 
  w11 system designs, and the associated Tcl bindings.
- add 'asm-11', a simple, Macro-11 syntax subset combatible, assembler. 
- use now doxygen 1.8.3.1, generate c++,tcl, and vhdl source docs

tools/src/checkpath_cpp.mk

@@ -0,0 +1,34 @@
+# $Id: checkpath_cpp.mk 504 2013-04-13 15:37:24Z mueller $
+#
+#  Revision History: 
+# Date         Rev Version  Comment
+# 2013-03-01   493   1.0.1  fix logic
+# 2013-02-01   479   1.0    Initial version
+#
+ifndef RETROBASE
+$(error RETROBASE not defined)
+endif
+#
+# check that BOOSTLIB/BOOSTINC are defined either both, or none 
+#
+ifndef BOOSTINC
+ifdef BOOSTLIB
+$(error BOOSTLIB defined, but not BOOSTINC; either both, or none !!)
+endif
+endif
+#
+ifndef BOOSTLIB
+ifdef BOOSTINC
+$(error BOOSTINC defined, but not BOOSTLIB; either both, or none !!)
+endif
+endif
+#
+# now define, if needed
+#
+ifndef BOOSTINC
+BOOSTINC = /usr/include
+endif
+#
+ifndef BOOSTLIB
+BOOSTLIB = /usr/lib
+endif