fix issue 658 - struct pointers in with()
fix Issue 10736 - Regression (2.064 git-head): Instantiation failure triggered by module import and module order

In the reduced test case, `test10736b` instantiates `chunks` template
function, then it instantiates `Chunks!(int[])`. The instance object will
be inserted to `test10736a` member because it is the first module that
importing `test10736c`. But in this time, `test10736a` module's semantic3
is already done, then `Chunks!(int[])` would immediately invoke its
semantic3, then `Chunks!(int[]).opSlice` refers *not yet instantiation
finished* `chunks` template.

To avoid the forward reference problem, we should defer semantic3 of
template instances which inserted to module scope.
fix Issue 10616 - class C: C.D{static class D{}} does not work
Merge pull request #2449 from 9rnsr/fix10616

Issue 10616 - class C: C.D{static class D{}} does not work
Replace some calls to OutBuffer->printf with OutBuffer->writestring
Merge pull request #2450 from Numpsy/printf

Replace some calls to OutBuffer->printf with OutBuffer->writestring
Merge pull request #2419 from hpohl/658

[enh] fix issue 658 - struct pointers in with()
fix issue 10744 - Rejects valid interface inheritance + wrong error
message
Merge pull request #2451 from hpohl/10744

[REG2.064a] fix issue 10744 - Rejects valid interface inheritance + wrong error message
Merge pull request #2442 from 9rnsr/fix10736

[REG2.064a] fix Issue 10736 - Regression (2.064 git-head): Instantiation failure triggered by module import and module order
fix issue 10783 - ICE and bad diagnostics when using non-existent
symbols in switch and with statements
Merge pull request #2457 from hpohl/10783

fix issue 10783 - ICE and bad diagnostics when using non-existent symbols in switch and with statements
fix issue 9247 - Compiler accepts opaque struct returned by value from
function pointer declaration.
Add Port::fequal for longdouble comparisons.
Merge pull request #2458 from hpohl/9247

fix issue 9247 - Compiler accepts opaque struct returned by value from function pointer declaration.
Merge pull request #2461 from ibuclaw/fequal

Add Port::fequal for longdouble comparisons.