RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/httpdate/README.md

@@ -0,0 +1,27 @@
+# Date and time utils for HTTP.
+
+[![Build Status](https://travis-ci.org/pyfisch/httpdate.svg?branch=master)](https://travis-ci.org/pyfisch/httpdate)
+[![Crates.io](https://img.shields.io/crates/v/httpdate.svg)](https://crates.io/crates/httpdate)
+[![Documentation](https://docs.rs/httpdate/badge.svg)](https://docs.rs/httpdate)
+
+Multiple HTTP header fields store timestamps.
+For example a response created on May 15, 2015 may contain the header
+`Date: Fri, 15 May 2015 15:34:21 GMT`. Since the timestamp does not
+contain any timezone or leap second information it is equvivalent to
+writing 1431696861 Unix time. Rust’s `SystemTime` is used to store
+these timestamps.
+
+This crate provides two public functions:
+
+* `parse_http_date` to parse a HTTP datetime string to a system time
+* `fmt_http_date` to format a system time to a IMF-fixdate
+
+In addition it exposes the `HttpDate` type that can be used to parse
+and format timestamps. Convert a sytem time to `HttpDate` and vice versa.
+The `HttpType` (8 bytes) is smaller than `SystemTime` (16 bytes) and
+using the display impl avoids a temporary allocation.
+
+Read the [blog post](https://pyfisch.org/blog/http-datetime-handling/) to learn
+more.
+
+Fuzz it by installing *cargo-fuzz* and running `cargo fuzz run fuzz_target_1`.