Replace core language HexStrings with library entity

[Nick Treleaven via Digitalmars-d]

On 17/03/2015 11:34, Biotronic wrote:
> On Monday, 16 March 2015 at 12:53:24 UTC, Nick Treleaven wrote:
>> 0b1010 binary literals (even though C++11 supports them)
>> 0xABCD hex literals (but useful for porting C)
>
> And while we're at it, why not remove those pesky base-10
> literals as well? Shouldn't be too hard to write dec!"123456"
> instead of 123456. :p

Because all programming languages support integer literals.