LDC 0.14.0 alpha1 released! Please help test!

[Dicebot via digitalmars-d-ldc]

For this simple program:

```
import std.stdio, std.algorithm;

void main()
{
     auto arr = [ 1, 2, 3, 4 ];
     writeln(arr.map!(a => 2*a));
}
```

-rwxr-xr-x  1 dicebot users 581K Aug  3 16:52 dmd
-rwxr-xr-x  1 dicebot users 3.6M Aug  3 17:24 gdc
-rwxr-xr-x  1 dicebot users 2.2M Aug  3 16:54 ldc-old
-rwxr-xr-x  1 dicebot users 410K Aug  3 17:21 ldc-new

It is quite interesting that dmd binary size is so smaller than 
gdc and old ldc output - probably something related to frontend 
symbol emitting difference. I have also checked `nm -a` output 
and can confirmed that `ldc-new` is the only one that does not 
have inlined map symbols (including lambda) in the resulting 
binary.

output for stripped binaries:

-rwxr-xr-x  1 dicebot users 387K Aug  3 17:27 dmd
-rwxr-xr-x  1 dicebot users 2.6M Aug  3 17:27 gdc
-rwxr-xr-x  1 dicebot users 1.1M Aug  3 17:27 ldc-old
-rwxr-xr-x  1 dicebot users 274K Aug  3 17:27 ldc-new

compiling small vibe.d application that uses Diet templates:

-rwxr-xr-x 1 dicebot users  16M Aug  3 17:30 diet-dmd
-rwxr-xr-x 1 dicebot users 8.2M Aug  3 17:31 diet-ldc-new