CMake build infrastructure II (#53)

* CMake build infrastructure

The squashed commit that builds and packages releases for the SIMH
simulator suite with CMake, version 3.14 or newer.

See README-CMake.md for documentation.

HP3000/CMakeLists.txt

@@ -0,0 +1,40 @@
+## HP3000 simulator
+##
+## This is an automagically generated file. Do NOT EDIT.
+## Any changes you make will be overwritten!!
+##
+## Make changes to the SIMH top-level makefile and then run the
+## "cmake/generate.py" script to regenerate these files.
+##
+##     cd cmake; python -m generate --help
+##
+## ------------------------------------------------------------
+
+if (HAVE_UNITY_FRAMEWORK AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/unit-tests/CMakeLists.txt")
+  add_subdirectory(unit-tests)
+endif ()
+
+add_simulator(hp3000
+    SOURCES
+        hp_disclib.c
+        hp_tapelib.c
+        hp3000_atc.c
+        hp3000_clk.c
+        hp3000_cpu.c
+        hp3000_cpu_base.c
+        hp3000_cpu_fp.c
+        hp3000_cpu_cis.c
+        hp3000_ds.c
+        hp3000_iop.c
+        hp3000_lp.c
+        hp3000_mem.c
+        hp3000_mpx.c
+        hp3000_ms.c
+        hp3000_scmb.c
+        hp3000_sel.c
+        hp3000_sys.c
+    INCLUDES
+        ${CMAKE_CURRENT_SOURCE_DIR}
+    LABEL HP3000
+    PKG_FAMILY hp_family
+    TEST hp3000)