Merge pull request #140 from staalmannen/claude/upgrade-ape-c-library-mmZGd

6l: declare cpos() in l.h

Author: staalmannen

sys/src/cmd/6l/l.h

@@ -369,6 +369,7 @@ Prog*	brchain(Prog*);
 Prog*	brloop(Prog*);
 void	buildop(void);
 void	cflush(void);
+vlong	cpos(void);
 void	ckoff(Sym*, long);
 Prog*	copyp(Prog*);
 double	cputime(void);