Get rid of #ifs for dylib and fPIC switches
fix Issue 10373 - cannot resolve forward reference
fix the bit patterns of double.nan and real.nan and real.inf for MS compiled dmd
Merge pull request #2246 from rainers/fix_port_nan_ms

fix the bit patterns of double.nan and real.nan and real.inf for MS compilation
Move Signalling NaN value into Port.
Merge pull request #2250 from ibuclaw/portsnan

Move Signalling NaN value into Port.
Merge pull request #2178 from yebblies/dylib

[DDMD] Make dylib a warning and fix #ifs
use unsigned value for interface offset
Merge pull request #2192 from 9rnsr/fix10373

[REG2.063] Issue 10373 - cannot resolve forward reference
Merge pull request #2252 from dawgfoto/fix10457

use unsigned value for interface offset