fix Issue 11401 - ElementType returns constructor instead of type

1. For `exp.member`, compiler always try to resolve property/optional parenthesis on `exp`. so use `front.init`.
2. Built-in `init` property always returns rvalue, so `front.init` won't invoke postblit.
Merge pull request #1681 from 9rnsr/fix11401

[REG2.065a] Issue 11401 - ElementType returns constructor instead of type
fix reg in appender
Fix Issue 11459 - std.container.Array bool constraint ambiguity
unittest and minor fixes
Merge pull request #1683 from monarchdodra/AppenderFixup

fix reg in appender
Merge pull request #1682 from monarchdodra/ArrayConstraint

Fix Issue 11459 - std.container.Array bool constraint ambiguity
Fix Issue 9737 - std.net.curl and SSL - documentation missing
Merge pull request #1687 from brocolis/fix9737

Fix Issue 9737 - std.net.curl and SSL - documentation missing