* fix openarray.len for string as openArray in VM.
* fix openarray[idx] for string as openArray in VM.
* fix openarray[idx]=val for string as openArray in VM.
* add tests for passing string as openArray in VM.
* fix issue with NimNode.len
NimNode.len was also returning len for string literals.
also fix logic bug in if/elif chain.
`writeDepsFile()` does not list files which were included with the
`include` statement, e.g, with:
import file1
include file2
`file1` will be written to the deps file, while `file2` would not.
Fix this by modifying `writeDepsFile()` to write included files as well.
Now, both `file1` and `file2` in the above example will be written to
the deps file.
The "genDepend" command was previously taught how to generate a "deps"
file in 4910a87c6 (gendepend improvements; refs #5144). Such a deps file
is useful in integrating the Nim compiler with an external build system
or watch daemon, such that it's possible to only run the Nim compiler
when any of the source files are modified.
It's also useful to generate the deps file in the nimcache directory
during C compilation, without needing to re-run the compilation passes
with "genDepend". This would thus reduce overall project build times.
this discard any implicit conversion on iterator return value.
the previous behaviour was to return a reference to a converted copy and
thus not modifying the original value.
This commit change the default behaviour of VM int/uint always being
64bits and make int/uint on VM behave identically to compiled code.
This insert 'opcNarrowU' or 'opcNarrow' opcode on Int/Uint operations
when needed to simulate smaller Int/Uint on VM.
