fossil: fix remaining warnings

R=rsc
https://codereview.appspot.com/15100044

src/cmd/fossil/cache.c

diff --git a/src/cmd/fossil/cache.c b/src/cmd/fossil/cache.c
index f37a710..23f8946 100644
--- a/src/cmd/fossil/cache.c
+++ b/src/cmd/fossil/cache.c
@@ -1900,11 +1900,11 @@
 }
 
 static int
-baddrCmp(void *a0, void *a1)
+baddrCmp(const void *a0, const void *a1)
 {
 	BAddr *b0, *b1;
-	b0 = a0;
-	b1 = a1;
+	b0 = (BAddr*)a0;
+	b1 = (BAddr*)a1;
 
 	if(b0->part < b1->part)
 		return -1;

src/cmd/fossil/check.c

diff --git a/src/cmd/fossil/check.c b/src/cmd/fossil/check.c
index 53a1bf2..6aa90fc 100644
--- a/src/cmd/fossil/check.c
+++ b/src/cmd/fossil/check.c
@@ -446,12 +446,12 @@
 };
 
 static int
-offsetCmp(void *s0, void *s1)
+offsetCmp(const void *s0, const void *s1)
 {
 	MetaChunk *mc0, *mc1;
 
-	mc0 = s0;
-	mc1 = s1;
+	mc0 = (MetaChunk*)s0;
+	mc1 = (MetaChunk*)s1;
 	if(mc0->offset < mc1->offset)
 		return -1;
 	if(mc0->offset > mc1->offset)

src/cmd/fossil/flfmt9660.c

diff --git a/src/cmd/fossil/flfmt9660.c b/src/cmd/fossil/flfmt9660.c
index f68bfb5..ac466bd 100644
--- a/src/cmd/fossil/flfmt9660.c
+++ b/src/cmd/fossil/flfmt9660.c
@@ -234,7 +234,7 @@
 	ascii();
 
 	v = (Voldesc*)root;
-	if(memcmp(v->magic, "\x01CD001\x01\x00", 8) != 0)
+	if(memcmp(v->magic, "\001CD001\001\000", 8) != 0)
 		sysfatal("%s not a cd image", file9660);
 
 	startoff = iso9660start((Cdir*)v->rootdir)*Blocksize;
@@ -256,7 +256,7 @@
 	if(readn(fd, sect2, Blocksize) != Blocksize)
 		sysfatal("cannot read first data sector on cd via fossil");
 	if(memcmp(sect, sect2, Blocksize) != 0)
-		sysfatal("iso9660 offset is a lie %08lux %08lux", *(long*)sect, *(long*)sect2);
+		sysfatal("iso9660 offset is a lie");
 }
 
 void

src/cmd/fossil/pack.c

diff --git a/src/cmd/fossil/pack.c b/src/cmd/fossil/pack.c
index 1dc3347..b27f90b 100644
--- a/src/cmd/fossil/pack.c
+++ b/src/cmd/fossil/pack.c
@@ -14,7 +14,7 @@
 
 #define	U8PUT(p,v)	(p)[0]=(v)
 #define	U16PUT(p,v)	(p)[0]=(v)>>8;(p)[1]=(v)
-#define	U32PUT(p,v)	(p)[0]=(v)>>24;(p)[1]=(v)>>16;(p)[2]=(v)>>8;(p)[3]=(v)
+#define	U32PUT(p,v)	(p)[0]=((v)>>24)&0xFF;(p)[1]=((v)>>16)&0xFF;(p)[2]=((v)>>8)&0xFF;(p)[3]=(v)&0xFF
 #define	U48PUT(p,v,t32)	t32=(v)>>32;U16PUT(p,t32);t32=(v);U32PUT((p)+2,t32)
 #define	U64PUT(p,v,t32)	t32=(v)>>32;U32PUT(p,t32);t32=(v);U32PUT((p)+4,t32)
 

src/cmd/fossil/vac.c

diff --git a/src/cmd/fossil/vac.c b/src/cmd/fossil/vac.c
index 85f0c7f..92c685a 100644
--- a/src/cmd/fossil/vac.c
+++ b/src/cmd/fossil/vac.c
@@ -28,7 +28,7 @@
 
 #define	U8PUT(p,v)	(p)[0]=(v)
 #define	U16PUT(p,v)	(p)[0]=(v)>>8;(p)[1]=(v)
-#define	U32PUT(p,v)	(p)[0]=(v)>>24;(p)[1]=(v)>>16;(p)[2]=(v)>>8;(p)[3]=(v)
+#define	U32PUT(p,v)	(p)[0]=((v)>>24)&0xFF;(p)[1]=((v)>>16)&0xFF;(p)[2]=((v)>>8)&0xFF;(p)[3]=(v)&0xFF
 #define	U48PUT(p,v,t32)	t32=(v)>>32;U16PUT(p,t32);t32=(v);U32PUT((p)+2,t32)
 #define	U64PUT(p,v,t32)	t32=(v)>>32;U32PUT(p,t32);t32=(v);U32PUT((p)+4,t32)
 
@@ -355,12 +355,12 @@
 }
 
 static int
-offsetCmp(void *s0, void *s1)
+offsetCmp(const void *s0, const void *s1)
 {
 	MetaChunk *mc0, *mc1;
 
-	mc0 = s0;
-	mc1 = s1;
+	mc0 = (MetaChunk*)s0;
+	mc1 = (MetaChunk*)s1;
 	if(mc0->offset < mc1->offset)
 		return -1;
 	if(mc0->offset > mc1->offset)