buff up ancient interfaces, even if they are not able to handle usize != ulong.

Reference: /n/atom/patch/applied/9usize
Date: Sun Aug 16 05:30:17 CES 2015
Signed-off-by: quanstro@quanstro.net

--- /sys/src/9/port/alloc.c	Sun Aug 16 05:29:52 2015
+++ /sys/src/9/port/alloc.c	Sun Aug 16 05:29:53 2015
@@ -166,7 +166,7 @@
 
 
 void*
-smalloc(ulong size)
+smalloc(usize size)
 {
 	void *v;
 
@@ -186,7 +186,7 @@
 }
 
 void*
-malloc(ulong size)
+malloc(usize size)
 {
 	void *v;
 
@@ -203,7 +203,7 @@
 }
 
 void*
-mallocz(ulong size, int clr)
+mallocz(usize size, int clr)
 {
 	void *v;
 
@@ -219,7 +219,7 @@
 }
 
 void*
-mallocalign(ulong size, ulong align, long offset, ulong span)
+mallocalign(usize size, usize align, long offset, usize span)
 {
 	void *v;
 
@@ -242,7 +242,7 @@
 }
 
 void*
-realloc(void *v, ulong size)
+realloc(void *v, usize size)
 {
 	void *nv;
 
@@ -260,14 +260,14 @@
 	return nv;
 }
 
-ulong
+usize
 msize(void *v)
 {
 	return poolmsize(mainmem, (ulong*)v-Npadlong)-Npadlong*sizeof(ulong);
 }
 
 void*
-calloc(ulong n, ulong szelem)
+calloc(usize n, usize szelem)
 {
 	void *v;
 	if(v = mallocz(n*szelem, 1))
@@ -275,8 +275,8 @@
 	return v;
 }
 
-void
-setmalloctag(void *v, ulong pc)
+uintptr
+setmalloctag(void *v, uintptr pc)
 {
 	ulong *u;
 	USED(v, pc);
@@ -287,7 +287,7 @@
 }
 
 void
-setrealloctag(void *v, ulong pc)
+setrealloctag(void *v, uintptr pc)
 {
 	ulong *u;
 	USED(v, pc);
@@ -297,7 +297,7 @@
 	u[-Npadlong+ReallocOffset] = pc;
 }
 
-ulong
+uintptr
 getmalloctag(void *v)
 {
 	USED(v);
@@ -306,7 +306,7 @@
 	return ((ulong*)v)[-Npadlong+MallocOffset];
 }
 
-ulong
+uintptr
 getrealloctag(void *v)
 {
 	USED(v);
--- /sys/src/9/port/debugalloc.c	Sun Aug 16 05:29:56 2015
+++ /sys/src/9/port/debugalloc.c	Sun Aug 16 05:29:57 2015
@@ -372,12 +372,12 @@
 
 Lock pcxlock;
 struct {
-	ulong	n;
-	ulong	pc;
+	usize	n;
+	uintptr	pc;
 } pcx[1024];
 
 static void
-remember(ulong pc, void *v)
+remember(uintptr pc, void *v)
 {
 	Bhdr *b;
 	int i;
@@ -419,7 +419,7 @@
 }
 
 void*
-malloc(ulong size)
+malloc(usize size)
 {
 	void *v;
 
@@ -431,7 +431,7 @@
 }
 
 void*
-smalloc(ulong size)
+smalloc(usize size)
 {
 	void *v;
 
@@ -447,7 +447,7 @@
 }
 
 void*
-mallocz(ulong size, int clr)
+mallocz(usize size, int clr)
 {
 	void *v;
 
@@ -471,7 +471,7 @@
 }
 
 void*
-realloc(void *v, ulong size)
+realloc(void *v, usize size)
 {
 	Bhdr *b;
 	void *nv;
@@ -495,7 +495,7 @@
 	return nv;
 }
 
-int
+usize
 msize(void *v)
 {
 	Bhdr *b;
@@ -505,7 +505,7 @@
 }
 
 void*
-calloc(ulong n, ulong szelem)
+calloc(usize n, usize szelem)
 {
 	return malloc(n*szelem);
 }
@@ -596,7 +596,7 @@
 }
 
 void
-poolsetparam(char *name, ulong maxsize, int quanta, int chunk)
+poolsetparam(char *name, usize maxsize, int quanta, int chunk)
 {
 	Pool *p;
 	int i;
--- /sys/src/9/port/qmalloc.c	Sun Aug 16 05:29:59 2015
+++ /sys/src/9/port/qmalloc.c	Sun Aug 16 05:30:01 2015
@@ -351,7 +351,7 @@
 	rover = q;
 }
 
-ulong
+usize
 msize(void* ap)
 {
 	Header *p;
@@ -499,7 +499,7 @@
 }
 
 void*
-malloc(ulong size)
+malloc(usize size)
 {
 	void* v;
 
@@ -510,7 +510,7 @@
 }
 
 void*
-mallocz(ulong size, int clr)
+mallocz(usize size, int clr)
 {
 	void *v;
 
@@ -521,7 +521,7 @@
 }
 
 void*
-mallocalign(ulong nbytes, ulong align, long offset, ulong span)
+mallocalign(usize nbytes, usize align, long offset, usize span)
 {
 	void *v;
 
@@ -542,7 +542,7 @@
 }
 
 void*
-smalloc(ulong size)
+smalloc(usize size)
 {
 	void *v;
 
@@ -554,7 +554,7 @@
 }
 
 void*
-realloc(void* ap, ulong size)
+realloc(void* ap, usize size)
 {
 	void *v;
 	Header *p;
--- /sys/src/9/port/xalloc.c	Sun Aug 16 05:30:03 2015
+++ /sys/src/9/port/xalloc.c	Sun Aug 16 05:30:04 2015
@@ -93,7 +93,7 @@
 }
 
 void*
-xspanalloc(ulong size, int align, ulong span)
+xspanalloc(usize size, int align, usize span)
 {
 	ulong a, v, t;
 
@@ -120,7 +120,7 @@
 }
 
 void*
-xallocz(ulong size, int zero)
+xallocz(usize size, int zero)
 {
 	Xhdr *p;
 	Hole *h, **l;
@@ -206,7 +206,7 @@
 }
 
 void
-xhole(ulong addr, ulong size)
+xhole(usize addr, usize size)
 {
 	ulong top;
 	Hole *h, *c, **l;