version number increament.

Merging Changelog/configure.ac for v1.78

* Change log
issue #29 - Possible to create Debian/Ubuntu packages?(googlecode issue 109)
issue 417(googlecode) - Password file with DOS format is not handled properly
issue #41 - Failed making signature
issue #40 - Moving a directory containing more than 1000 files truncates the directory
issue #49 - use_sse is ignored when creating new files
issue #39 - Support for SSE-C
issue #50 - Cannot find pkg-config when configured with any SSL backend except openssl