fixed some portability bugs in vmgen-ex and vmgen-ex2
updated copyright years

inserted copyright messages in most files that did not have them
removed outdated files engine/32bit.h engine/strsig.c

Cross: Added non-byte-addressed architectures as possible target (not hosts
yet).
Rest: all types are now Gforth-private types (so you could define as Char
whatever you where like). Some messing around with inabilities of Analog
Devices port of GCC.

Moved many files to other directories
renamed many files
other changes unknown to me.

changes to loadfilename & co. to make savesystem transparent to
 assertions and ~~

configure.in; I still left it in the CVS repository because not
everyone has autoconf. decstation.h renamed to mips.h and apollo68k to
m68k. Added general 32bit.h description, which the other machine
descriptions use. Created/copied replacement files install-sh memcmp.c
memmove.c select.c (carved out from ecvt.c) strtol.c
strtoul.c. Bytesex is now handled by configure.

Deciding the threading method is now done in machine.h, this should
also be done for USE_TOS and USE_FTOS.