Update to solc 0.4.24

[tbocek]

Also removed manual compiling and using binaries from https://github.com/ethereum/solidity/releases.

[mkalinin]

What is the purpose of removing some files from scripts?
Could you, also, update README.md?

[mkalinin]

Fixes #10

[tbocek]

The files in scripts were used to compile solc for windows and linux. Since the binaries are now downloaded from https://solidity.readthedocs.io/en/latest/installing-solidity.html#binary-packages within the gradle build process, they are not needed anymore. So I removed them.

The version numbers are updated in README.md in this pull request.

[mkalinin]

The version numbers are updated in README.md in this pull request.

Ah, yes. Sorry.
I don't see any drawbacks in keeping old scripts. It is good to have an alternative way of getting those binaries. I am about to merge when you bring scripts back.

[tbocek]

Alright, now keeping the old scripts and explaining in the instructions why this directory is there.

[mkalinin]

Thanks for your awesome work!

[mkalinin]

https://dl.bintray.com/ethereum/maven/org/ethereum/solcJ-all/0.4.24/

[zilm13]

Both 0.4.23 and 0.4.24 not working for me on Mac, while 0.4.19 is ok
When compiling something, stdout and stderr both are empty, while exit code is 132

[tbocek]

I just noticed the same thing. A friend of mine that has a Mac and did not compile solc on his machine, reported that its missing the libz3 library. It seems that the binaries on Mac are not statically linked. I don't think that solidity will provide a Mac binary soon: ethereum/solidity#3168. Thus, keeping up with new releases will be a pain for those who don't have a Mac.