update to latest 3rd party libraries

bump version to 0.26.5

bump version to 0.26.4

The upgrade to libssh 0.7.0 should fix ashkulz#31.

bump version to 0.26.3

bump version to 0.26.2

release 0.26.1

bump version to 0.26

This mostly involved documenting the build process and updating the
libraries used:

* zlib updated from 1.2.4 to 1.2.8 (precompiled)
* OpenSSL updated from 0.9.8n to 1.0.1j (precompiled)
* libssh updated from 0.4.4 to 0.6.4 (precompiled)
* TinyXML updated from 2.6.1 to 2.6.2

git-svn-id: svn://svn.code.sf.net/p/nppftp/code/NppFTP@20 e1eea60f-96cb-45df-9f85-ae3a5fd22bdd