Add basic support for Proxy Protocol#125

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danny-cheung wants to merge 5 commits intoflashmob:masterfrom

danny-cheung:patch-1

Commits on Oct 18, 2018

Add basic support for Proxy Protocol
Danny Cheung
authored
Fix response output strings
Danny Cheung
authored
Add testing for Proxy Protocol
Danny Cheung
authored
Response with blank line on successful PROXY and update firstcmd marker
Danny Cheung
authored
Fix typo in Sprintf usage
Danny Cheung
authored