fix Issue 10094 - NRVO with static array return should work
fix Issue 10249 - incorrect mangling for overloaded symbol
Get rid of #ifs for dylib and fPIC switches
fix Issue 10373 - cannot resolve forward reference
fix Issue 10375 - private template from imported module hijacks a template type parameter(!)
improve hash speed
convert template lookup to hash table
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
speed up based on gprof data
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
Merge pull request #2239 from WalterBright/hash_instance

convert template lookup from array to hash table
Merge pull request #2248 from WalterBright/tweak-hash

tweak rehash threshhold
Merge pull request #2247 from WalterBright/speed_up_search

speed up based on gprof data
mscoff: always align to 16 bytes to be able to support align(16)
fix bad merging of non-COMDAT data into COMDAT segment
Merge pull request #2191 from 9rnsr/fix10375

[REG2.061] Issue 10375 - private template from imported module hijacks a template type parameter(!)