Fix @property annotations and incorrect parenthesis
Remove -property switch
key is unaltered
remove unused AA vararg functions
remove old TODO comment

- We are not going to replace the current AA signatures which take
  an extra parameter for the value size, because getting it from
  TypeInfo_AssociativeArray instead required another virtual call.
remove dead&rotten code
opaque AA Range interface
Merge pull request #549 from dawgfoto/cleanupAA

Cleanup AA
Merge pull request #511 from dawgfoto/internalizeAA

opaque AA Range interface
dmd no longer uses this list on linux
Merge pull request #552 from dawgfoto/removeModuleRef

dmd no longer uses this list on linux
fix issue 10720 - ICE with is(aaOfNonCopyableStruct.nonExistingField)

AA.dup should be disabled if Value type is not copyable.
The root cause was the use of Value.init. Built-in `init` property makes
rvalue, therefore the 'static if' condition did not properly test
'copyable' trait of Value type.
Merge pull request #554 from 9rnsr/fix10720

issue 10720 - ICE with is(aaOfNonCopyableStruct.nonExistingField)
add explanatory comments
Merge pull request #555 from WalterBright/addSectionComments

add explanatory comments
win64: embed debug info in object files compiled from C instead of writing to pdb file
arrayop: remove bad contraints on overlapping rvalues
Merge pull request #538 from 9rnsr/enforceProp

Supplemental change for dmd/pull/2305
Merge pull request #558 from rainers/arrayop_rvalue_overlap

remove bad contraints on overlapping rvalues of array operations
Merge pull request #557 from rainers/fix_10747

fix Issue 10747 - Win64: warning about non-existing vc100.pdb