branches: 1.2.2; 1.2.28;Define and use NOTINCRUNCHED to allow sparkcrc to overide the ../Makefile.incdefault of building static and not allowing install. Now we can build it asa tool.
Import a trivial program to generate 16bit CRCs as used in sparkive archives.For use by mksparkive.sh in generating the acorn32 bootloader sparkive.