merging latest dmd frontend to gdc

[Vincenzo Ampolo]

Vincenzo Ampolo wrote:

> If tests will be good, i'll commit
> the changes.
> 

Tests went good :)

goshawk at earth:/tmp/test/usr/local/gcc-4.3/bin$ ./gdc ~/test.d
goshawk at earth:/tmp/test/usr/local/gcc-4.3/bin$ ./a.out
Hello World, Reloaded
goshawk at earth:/tmp/test/usr/local/gcc-4.3/bin$ ./gdc -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/usr/local/gcc-4.3 --enable-
languages=c,d,c++ --disable-multilib --disable-shared
Thread model: posix
gcc version 4.3.4 (GCC)
goshawk at earth:/tmp/test/usr/local/gcc-4.3/bin$

it's D2 ;)