logwrapper: rename logwrap() to android_fork_execvp()

Also change the quiet flag to a logwrap flag (inverses the meaning of
the boolean).

Change-Id: I76047a7b460f4c28d52f26bfe3f65889d96047f8
diff --git a/logwrapper/logwrapper.c b/logwrapper/logwrapper.c
index cba69d9..ed71a29 100644
--- a/logwrapper/logwrapper.c
+++ b/logwrapper/logwrapper.c
@@ -59,7 +59,7 @@
         usage();
     }
 
-    rc = logwrap(argc - 1, &argv[1], &status, true, false);
+    rc = android_fork_execvp(argc - 1, &argv[1], &status, true, true);
     if (!rc) {
         if (WIFEXITED(status))
             rc = WEXITSTATUS(status);