Hook 2 for FlowSync 3.0.0+ on OSX x86-64

This is a rebuild (ie re-compilation, with no code changes) of the hook to work with Polar FlowSync 3.0.0 on OSX (#92). Specifically, it is built to target the x86-64 architecture, since FlowSync 3.0.0 for OSX moved from Qt 5.1.1 i386 to Qt 5.5.1 x86-64.

Note, this hook was shifted from Qt 5.1.1 to Qt 5.5.1 previously (see hook-2-fs300), but was not also moved from i386 to x86-64 (simply because that aspect of Polar's move was not noticed).

This build also includes a minor OpenSSL bump from 1.0.2p to 1.0.2r on Windows, but otherwise has no difference for that platform.

This hook will be included in future Bipolar releases, starting with Bipolar 0.5.10.