Gmail IMAP search additions - release fix

• Gmail search features: X-GM-MSGID, X-GM-THRID, X-GM-RAW
• Added POP stat
• Various fixes for Windows
• Fixed OpenSSL / GnuTLS implementation of retrieval of certificates
• Fixed IMAP IDLE in case of COMPRESS-ed streams
• Fixed base64 encoding

Gmail IMAP search additions

• Gmail search features: X-GM-MSGID, X-GM-THRID, X-GM-RAW
• Added POP stat
• Various fixes for Windows
• Fixed OpenSSL / GnuTLS implementation of retrieval of certificates
• Fixed IMAP IDLE in case of COMPRESS-ed streams
• Fixed base64 encoding