code: drawterm

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avoid redefinition of IOUNIT (clashes with devdraw)

Move the IOUNIT definition in user.h to avoid clash
with devdraws IOUNIT.

--- a/include/lib.h

+++ b/include/lib.h

@@ -109,7 +109,6 @@

 #define	ERRMAX			128	/* max length of error string */

 #define	KNAMELEN		28	/* max length of name held in kernel */

-#define IOUNIT			32768	/* default buffer size for 9p io */

 /* bits in Qid.type */

 #define QTDIR		0x80		/* type bit for directories */

--- a/include/user.h

+++ b/include/user.h

@@ -98,3 +98,5 @@

 extern	int	atexit(void (*)(void));

 extern	void	exits(char*);

 extern	char*	getenv(char*);

+

+#define IOUNIT			32768	/* default buffer size for 9p io */