Rename LibCore{4 -> 3}, new class will be created for version 4
Remove deprecated files
rm libnet leftovers
Move opcodes to core
Start implementing core4
Headers and symbols for core4.string
Add Function.curry and Structure.clone to core4
Add error.eh functions
Move EVM to core and add throw instruction
Add ProcessKilledException
Moving functions away from libcore3
core4: math functions
rnd.eh for libcore4
Change naming in function.curry
Add globals to process and evm
libcore4: input/output streams
Add remaining IO functions to libcore4
dataio.eh in libcore4