* kaem.run: New file.
* simple.make: Update.
* lib/m2/abtol.c: New file.
* lib/m2/access.c: New file.
* lib/m2/atoi.c: New file.
* lib/m2/chmod.c: New file.
* lib/m2/clock_gettime.c: New file.
* lib/m2/dup.c: New file.
* lib/m2/dup2.c: New file.
* lib/m2/eputs.c: New file.
* lib/m2/execv.c: New file.
* lib/m2/execve.c: New file.
* lib/m2/exit.c: New file.
* lib/m2/fdputc.c: New file.
* lib/m2/fork.c: New file.
* lib/m2/getcwd.c: New file.
* lib/m2/getenv.c: New file.
* lib/m2/isatty.c: New file.
* lib/m2/memchr.c: New file.
* lib/m2/memcmp.c: New file.
* lib/m2/memcpy.c: New file.
* lib/m2/memset.c: New file.
* lib/m2/mes_open.c: New file.
* lib/m2/ntoab.c: New file.
* lib/m2/open.c: New file.
* lib/m2/read.c: New file.
* lib/m2/setenv.c: New file.
* lib/m2/strcmp.c: New file.
* lib/m2/strcpy.c: New file.
* lib/m2/strlen.c: New file.
* lib/m2/strncmp.c: New file.
* lib/m2/time.c: New file.
* lib/m2/unlink.c: New file.
* lib/m2/waitpid.c: New file.
* lib/m2/write.c: New file.
* include/mes/cc.h: Prepare for pointer-based cells.
* include/mes/macros.h[POINTER_CELLS]: Alternative set of macros.
* include/mes/mes.h (struct scm)[POINTER_CELLS]: Alternative definition.
* src/gc.c (copy_cell, copy_news): New function.
* include/mes/mes.h: Declare them.