libmach: move machbyname, mach to crack.c to avoid OS X linker problem

src/libmach/crack.c

@@ -4,6 +4,32 @@
 #include <mach.h>
 #include "elf.h"
 
+
+Mach *mach;
+
+extern Mach mach386;
+extern Mach machpower;
+
+static Mach *machs[] = 
+{
+	&mach386,
+	&machpower,
+};
+
+Mach*
+machbyname(char *name)
+{
+	int i;
+
+	for(i=0; i<nelem(machs); i++)
+		if(strcmp(machs[i]->name, name) == 0){
+			mach = machs[i];
+			return machs[i];
+		}
+	werrstr("machine '%s' not found", name);
+	return nil;
+}
+
 static struct
 {
 	ulong magic;

src/libmach/mach.c

@@ -1,30 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <bio.h>
-#include <mach.h>
-
-Mach *mach;
-
-extern Mach mach386;
-extern Mach machpower;
-
-static Mach *machs[] = 
-{
-	&mach386,
-	&machpower,
-};
-
-Mach*
-machbyname(char *name)
-{
-	int i;
-
-	for(i=0; i<nelem(machs); i++)
-		if(strcmp(machs[i]->name, name) == 0){
-			mach = machs[i];
-			return machs[i];
-		}
-	werrstr("machine '%s' not found", name);
-	return nil;
-}
-

src/libmach/mkfile

@@ -27,7 +27,6 @@ OFILES=\
 	ieee.$O\
 	loc.$O\
 	localaddr.$O\
-	mach.$O\
 	mach386.$O\
 	macho.$O\
 	machocorepower.$O\