renamed to execve to make it more clear

core/syscall.go

@@ -4,6 +4,7 @@ package core
 
 import "syscall"
 
-func exec(argv0 string, argv []string, envv []string) error {
+// execve invokes the execve(2) system call.
+func execve(argv0 string, argv []string, envv []string) error {
 	return syscall.Exec(argv0, argv, envv)
 }