Fix for Android, for latest version of code.

Signed-off-by: FellowTraveler <F3llowTraveler@gmail.com>
Merge pull request #103 from FellowTraveler/master

Fix for Android, for latest version of code.
Merge pull request #104 from Open-Transactions/master

Minor fix for Android build
no header ref to simpleini
irrxml removed from headers
move all PB code to own Storage header
compile but don't use zmq
make zmq4 optional
make zmq4 the default