Relax isPOD rules so ctors don't make structs non-POD
add Windows SDK 8.1 library search path to sc.ini
[cleanup] fix indent style
[Refactoring] `instantiatingModule` should be derived from `sc->tinst`
[Refactoring] Add `TemplateDeclaration::evaluateConstaint`
Evaluate template constraint under the emulated instantiation scope

Always run doHeaderInstantiation and use the result to the context of constraint evaluation
fix Issue 10133 - ICE for templated static conditional lambda
[Improve] Remove hacks for access check inside template constraint
[Improve] Relax restrictions on issue 6538 and 9361

Now pseudo symbols are placed in emulated scopes, and taking them by alias parameter is allowed.
[Improve] Make diagnostic message more informative by using toPrettyChars()

Segfault issue is now resolved.
fix Issue 11956 - dmd doesn't lookup /etc/dmd.conf

- define variable in src/posix.mak instead of posix.mak
- fix quotes
- assert that SYSCONFDIR was set to a non-empty string
Remove 'awful hack' introduced when fixing issue 3029
fix Issue 11966 - inout(const(char))[] doesn't convert to inout(char)[]
fix Issue 11974 - ICE(cast.c) Segfault with invalid assignment
Merge pull request #3141 from 9rnsr/fix11974

Issue 11974 - ICE(cast.c) Segfault with invalid assignment
Merge pull request #3128 from MartinNowak/fix11956

fix Issue 11956 - dmd doesn't lookup /etc/dmd.conf
Merge pull request #3138 from 9rnsr/fix11966

[REG2.065a] Issue 11966 - inout(const(char))[] doesn't convert to inout(char)[]
Merge pull request #3092 from rainers/win64_sdk81

issue 11457: add Windows SDK 8.1 library search path to sc.ini
Merge pull request #3103 from 9rnsr/fix10133

Issue 10133 - ICE for templated static conditional lambda
fix Issue 11980 - startaddress pragma broken