Initial Update of Windows Packaging (#438)

* Update run.py & .gitignore for windows

- Update run.py to execute on windows as SIGQUIT is not available.
- Update .gitignore to ignore the generate .pyd files
Ref #300, #393

* Update package.py for windows

Add package_windows back into package.py
- Using cx_freeze for freezing installation
- Will be using nsis for actual installer
Tested with python 3.5 64bit on windows 10
Ref #393

* Update makefile for windows (+2 misc)

- Update the makefile to support windows
- Use different bin path in virtualenv
- Use pyd instead of so files
- Tested with Msys2
- Add *.exe to .gitignore
- Fix minor format error in package.py
Ref #393

* Add requirements-windows

Add the requirements-windows.txt
- contains cx-Freeze for bundling
Ref #393

* Add initial setup.nsi

Initial Version of a NSIS installer script
- Multi-user install (install for just one or all)
- Registers uninstaller (more values need to finish up)
- Tested both single and all install / uninstall and works
- Still need to add parameters instead of hardcoded values in some spots
- Need to clean up vendor folders / keys if empty on uninstall
- Need to add the other dupeGuru languages to the language list
- Minor cleanup of script needed as well
Ref #393

* Update setup.nsi

Updates to setup.nsi including:
- Defines from CLI
- Version information (MAJOR, MINOR, PATCH)
- Bits (64 / 32)
- SourcePath (if we wanted something other than build)
- Added extra defines to move application specifics to one location
- Added extra defines for uninstall information
- Added calculation of install size
- Added switching between 64 and 32 bit contexts (need to verify
functionality)
- Updated output file naming
- Added NSIS supported languages which are also supported by dupeGuru
- Added rest of registry keys for uninstall information
- Added missing registry key for installType
- Added removeing Vendor folder and registry key if empty on uninstall

Should be very close to having this installer script ready to integrate
into the package.py script if desired.
Ref #393

* Update README & requirements-windows

Minor update to README to indicate windows is supported.  Add PyQt5 to
requirements-windows.txt to make installation easier.

* Update packaging for windows

- Update package.py to integrate NSIS for windows
- Update makefile to deal with a few additional windows issues
- Add Windows.md to contain specific windows instructions, if we want
this can be merged with README.md
- Minor formatting update to setup.nsi
Ref #393

* Update README & Windows Instructions

- Update the README to include a reference to the Windows instructions.
-  Add some additional notes into Windows Instructions and remove one
incorrect command.
- Update .gitignore to ignore all permutations of env* to allow for
multiple side by side virtual environments (used to build different
versions for windows)
Ref:  #393

* Update Window.md

Fix broken python link and move nsis link for consistency.

* More Details in Windows.md

Update Windows.md including:
- Information on compilier requirements for windows
- Notes about the windows 10 sdk
- Some clarification around some of the steps
- Addition of msys2 links

Going to review this a bit more to polish it up.

Ref #393.

Makefile

@@ -1,7 +1,23 @@
 PYTHON ?= python3
+PYRCC5 ?= pyrcc5
 REQ_MINOR_VERSION = 4
 PREFIX ?= /usr/local
 
+# Window compatability via Msys2 
+# - venv creates Scripts instead of bin
+# - compile generates .pyd instead of .so
+# - venv with --sytem-site-packages has issues on windows as well...
+
+ifeq ($(shell uname -o), Msys)
+	BIN = Scripts
+	SO = pyd
+	VENV_OPTIONS = 
+else
+	BIN = bin
+	SO = so
+	VENV_OPTIONS = --system-site-packages
+endif
+
 # Set this variable if all dependencies are already met on the system. We will then avoid the
 # whole vitualenv creation and pip install dance.
 NO_VENV ?=
@@ -9,7 +25,7 @@ NO_VENV ?=
 ifdef NO_VENV
 	VENV_PYTHON = $(PYTHON)
 else
-	VENV_PYTHON = ./env/bin/python
+	VENV_PYTHON = ./env/$(BIN)/python
 endif
 
 # If you're installing into a path that is not going to be the final path prefix (such as a
@@ -61,33 +77,33 @@ ifndef NO_VENV
 	$(VENV_PYTHON) -m pip install -r requirements.txt
 # We can't use the "--system-site-packages" flag on creation because otherwise we end up with
 # the system's pip and that messes up things in some cases (notably in Gentoo).
-	${PYTHON} -m venv --upgrade --system-site-packages env
+	${PYTHON} -m venv --upgrade ${VENV_OPTIONS} env
 endif
 
 build/help : | env
 	$(VENV_PYTHON) build.py --doc
 
 qt/dg_rc.py : qt/dg.qrc
-	pyrcc5 qt/dg.qrc > qt/dg_rc.py
+	$(PYRCC5) qt/dg.qrc > qt/dg_rc.py
 
 i18n: $(mofiles)
 
 %.mo : %.po
 	msgfmt -o $@ $<	
 
-core/pe/_block.*.so : core/pe/modules/block.c core/pe/modules/common.c | env
+core/pe/_block.*.$(SO) : core/pe/modules/block.c core/pe/modules/common.c | env
 	$(VENV_PYTHON) hscommon/build_ext.py $^ _block
-	mv _block.*.so core/pe
+	mv _block.*.$(SO) core/pe
 
-core/pe/_cache.*.so : core/pe/modules/cache.c core/pe/modules/common.c | env
+core/pe/_cache.*.$(SO) : core/pe/modules/cache.c core/pe/modules/common.c | env
 	$(VENV_PYTHON) hscommon/build_ext.py $^ _cache
-	mv _cache.*.so core/pe
+	mv _cache.*.$(SO) core/pe
 
-qt/pe/_block_qt.*.so : qt/pe/modules/block.c | env
+qt/pe/_block_qt.*.$(SO) : qt/pe/modules/block.c | env
 	$(VENV_PYTHON) hscommon/build_ext.py $^ _block_qt
-	mv _block_qt.*.so qt/pe
+	mv _block_qt.*.$(SO) qt/pe
 
-modules : core/pe/_block.*.so core/pe/_cache.*.so qt/pe/_block_qt.*.so
+modules : core/pe/_block.*.$(SO) core/pe/_cache.*.$(SO) qt/pe/_block_qt.*.$(SO)
 
 mergepot :
 	$(VENV_PYTHON) build.py --mergepot
@@ -123,6 +139,6 @@ uninstall :
 clean:
 	-rm -rf build
 	-rm locale/*/LC_MESSAGES/*.mo
-	-rm core/pe/*.so qt/pe/*.so
+	-rm core/pe/*.$(SO) qt/pe/*.$(SO)
 
 .PHONY : clean srcpkg normpo mergepot modules i18n reqs run pyc install uninstall all