add assert to check whether system is 64bit.
updated authors file.
anticipate a future where a large stealth_bitfield is needed and don't make the 4 bytes hardcoded in the db.
README: added Gentoo instructions
tidy serializer by moving implementation to .ipp file.
added documentation comments to serializer header.
added detail of returned result to documentation comment for blockchain::fetch_stealth().
Update Visual Studio standard project props.
bugfix: alloc error because of overflow.
cleanup handshake code slightly.
remove constexpr from base_value(opcode) in script.cpp
switch to new big_number set_compact()/compact() code from bitcoind for compatibility.
switch to static_cast instead of c style cast.
tidy up code so loop looks less confusing.
Merge branch 'spesmilo/master'
added define.hpp with shared lib / DLL visibility macros.
typo.
prefer BC_API/BC_HIDDEN over potentially confusing BC_PUBLIC/BC_PRIVATE
rename BC_HIDDEN to BC_INTERNAL
use stronger internal linkage attribute