examples: gitignore more binaries

docs/examples/.gitignore

@@ -20,15 +20,39 @@ httpcustomheader
 httpput
 https
 imap
+imap-append
+imap-copy
+imap-create
+imap-delete
+imap-examine
+imap-fetch
+imap-list
+imap-multi
+imap-noop
+imap-search
+imap-ssl
+imap-store
+imap-tls
 multi-app
 multi-debugcallback
 multi-double
 multi-post
 multi-single
 persistant
+pop3-dele
+pop3-list
+pop3-multi
+pop3-noop
+pop3-retr
+pop3-ssl
+pop3-stat
+pop3-tls
+pop3-top
+pop3-uidl
 pop3s
 pop3slist
 post-callback
+postinmemory
 postit2
 progressfunc
 resolve
@@ -40,8 +64,12 @@ simple
 simplepost
 simplesmtp
 simplessl
+smtp-expn
+smtp-mail
 smtp-multi
+smtp-ssl
 smtp-tls
+smtp-vrfy
 url2file
 usercertinmem
 xmlstream