Merge pull request #89 from zathras-crypto/michael-0921_z

RPC changes for more accuracy
Create,Destroy,Update for MetaDEx + some cleanup
Merge branch 'michael-0921' of https://github.com/mastercoin-msc/mastercore into michael-0921

Conflicts:
	src/mastercore.h

mergetool result
wrapper for TestNet() & RegTest() ; getting ready for the change in the upcoming Bitcoin core !
Remove old preseed restrictions