add rpms for double-conversion

Summary: Add the system dependencies so getdeps can install them if not present

Reviewed By: krallin

Differential Revision: D32152976

fbshipit-source-id: 29311f37126e1eac8dfbe2f46f6bc3516848d48b

build/fbcode_builder/manifests/double-conversion

@@ -5,7 +5,10 @@ name = double-conversion
 url = https://github.com/google/double-conversion/archive/v3.1.4.tar.gz
 sha256 = 95004b65e43fefc6100f337a25da27bb99b9ef8d4071a36a33b5e83eb1f82021
 
+[rpms]
+double-conversion
+double-conversion-devel
+
 [build]
 builder = cmake
 subdir = double-conversion-3.1.4
-