* Upgraded picnic to v3.0.2.
* Fix explicit_bzero function.
* Fixed redefinition of AddByte on little endian platforms (picnic's and oqs's namespacing)
* Update picnic to v3.0.3
* Fixing some picnic functions namespacing
* Added namespacing for picnic function on little endian system.
* More picnic namespacing fixes
* More picnic namespacing fixes, round 2
* Added more namespacing prefix
* More picnic namespacing
* Explicit namespacing for KeccakP1600times4_StaticInitialize function