06.02.2018/JED - based on Panda-IMAP 20180123

1. hide dot-files patch.
   - panda-imap-2010/Makefile
   - panda-imap-2010/src/osdep/unix/dummy.c
   - panda-imap-2010/src/osdep/unix/env_unix.c

2. nologin file name patch.
   - panda-imap-2010/src/imapd/Makefile

3. TLSv1.1, TLSv1.2 and DH parameter patch.
   - panda-imap-2010/src/osdep/unix/env_unix.c

4. import c-client shared library support patch.
   # GitHub: nkhorman/panda-imap
   #         https://github.com/nkhorman/panda-imap/commit/6e11191dab5a1d94680d202e642acef9ac2eeda2
   - panda-imap-2010/src/osdep/unix/Makefile