Codegen for GAS
Implemented ADDMOD, MULMOD and GAS [Delivers #80566276]
Fixes in inline asm in some jump tests.
Merge branch 'develop-evmcc' of github.com:imapp-pl/ethereum into develop-evmcc

Conflicts:
	evmcc/test/jump/loop1.evm
	evmcc/test/jump/loop1.lll
	evmcc/test/jump/loop2.evm
	evmcc/test/jump/loop2.lll
Initial implementation for CALLDATACOPY
[Delivers #80644732]
Merge branch 'develop-evmcc' of github.com:imapp-pl/ethereum into develop-evmcc
Fixes in CALLDATACOPY
[Delivers #80644732]