attach to parent console and provide stdout/stderr for GUI app. under Windows
fixup issue 767 & func.cc cleanup
1) fixed last cases of duplicate calls to getArgValue() in builtin_lookup() and instantiate();
2) make sin_degrees() & cos_degrees() separate functions to use in other parts of code;
3) cleaned most of gcc warnings in func.cc
Merge pull request #823 from tim-caper/func.cc

fixup issue 767 & func.cc cleanup
Merge branch 'winconsole2' of git://github.com/tim-caper/openscad into tim-caper-winconsole2

Conflicts:
	src/openscad.cc
use MS Windows API for Unicode and/or stdout support
Bugfix: Work around Clipper's incorrect isHole status after offset()
[scad-mode] Improved package description
Use mt-version of boost for MacPorts and Homebrew
Merge pull request #827 from purcell/patch-1

[scad-mode] Improved package description
Merge pull request #826 from tim-caper/winconsole.c

use MS Windows API for Unicode and/or stdout support
Merge branch 'master' into minkowski-speedup
Updated expected file for #495
Added testcase for erosions issue