Re-add optional std feature dependencies to fix RGS and BP builds

We previously removed these, leading to failure to build under default
features including `std`.

Author: tnull

lightning-background-processor/Cargo.toml

@@ -15,7 +15,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 
 [features]
 futures = [ ]
-std = []
+std = ["lightning/std", "lightning-rapid-gossip-sync/std"]
 
 default = ["std"]
 

lightning-rapid-gossip-sync/Cargo.toml

@@ -11,11 +11,13 @@ Utility to process gossip routing data from Rapid Gossip Sync Server.
 
 [features]
 default = ["std"]
-std = []
+std = ["bitcoin-io/std", "bitcoin_hashes/std"]
 
 [dependencies]
 lightning = { version = "0.0.124", path = "../lightning", default-features = false }
 bitcoin = { version = "0.32.2", default-features = false }
+bitcoin_hashes = { version = "0.14.0", default-features = false }
+bitcoin-io = { version = "0.1.2", default-features = false }
 
 [target.'cfg(ldk_bench)'.dependencies]
 criterion = { version = "0.4", optional = true, default-features = false }