Update NSS to 3.38

- Added HACL*Poly1305 32-bit (INRIA/Microsoft)
- Updated to final TLS 1.3 draft version (28)
- Removed TLS 1.3 prerelease draft limit check
- Removed NPN code
- Enabled dev/urandom-only RNG on Linux with NSS_SEED_ONLY_DEV_URANDOM for non-standard environments
- Fixed several bugs with TLS 1.3 negotiation
- Updated internal certificate store
- Added support for the TLS Record Size Limit Extension.
- Fixed CVE-2018-0495
- Various security fixes in the ASN.1 code.

security/nss/coreconf/nsinstall/pathsub.c

@@ -212,7 +212,7 @@ reversepath(char *inpath, char *name, int len, char *outpath)
 	    xchdir("..");
 	} else {
 	    cp -= 3;
-	    strncpy(cp, "../", 3);
+	    memcpy(cp, "../", 3);
 	    xchdir(buf);
 	}
     }