CogVM source as per VMMaker.oscog-eem.3731

Introduce a primitive that sets a process's priority correctly
in all cases except those for which the primitive should fail.

Integrate Sabine Schnabeltier's fix for issue #759,
SpurMemoryManager>>#enterIntoClassTable: skips potentially free entries.

Better document the apparently non-obvious primitiveYield

Author: eliotmiranda

src/spur32.cog.lowcode/cointerp.c

@@ -1,6 +1,6 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.3719 uuid: f4458ee4-33dc-4863-bb54-db8205fa6cf5
-	(* Cog-eem.507, Compiler-eem.527)
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.3731 uuid: 6a142767-921d-4358-a03a-eb9daa02bc63
+	(Cog-eem.508, Compiler-eem.527)
  */
 
 

src/spur32.cog.lowcode/cointerp.h

@@ -1,6 +1,6 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.3728 uuid: 5005e53a-916b-4728-b414-82df1ed8a6a2
-	(* Cog-eem.507, Compiler-eem.527)
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.3731 uuid: 6a142767-921d-4358-a03a-eb9daa02bc63
+	(Cog-eem.508, Compiler-eem.527)
  */
 
 

src/spur32.cog.lowcode/gcc3x-cointerp.c

@@ -1,6 +1,6 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.3719 uuid: f4458ee4-33dc-4863-bb54-db8205fa6cf5
-	(* Cog-eem.507, Compiler-eem.527)
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.3731 uuid: 6a142767-921d-4358-a03a-eb9daa02bc63
+	(Cog-eem.508, Compiler-eem.527)
  */