trade_MP: refine validation checks

In particular there is no validation check of properties required for "cancel-everything".
Merge pull request #224 from dexX7/mcore-refine-trademp-validation

trade_MP: refine validation checks
add alert type message
Remove UINT64_C, endian.h, some number adjustments

Gitian build currently ongoing.
Merge pull request #232 from dexX7/mcore-replace-uint64_c

Remove UINT64_C
disabling metadex for the tag
Merge branch 'mscore-0.0.9' of http://github.com/mastercoin-msc/mastercore into mscore-0.0.9

pulling the lastest
the fix :)
Extract property base information
Merge pull request #237 from dexX7/mcore-rpc-extract-property-info

Extract property base information
Merge branch 'mscore-0.0.9' of github.com:mastercoin-MSC/mastercore into 0.0.9-Z-UIAlpha
Increase initial window size