AppVeyor Support (#161)

This patch provides support for building Bareflank on Windows
usign AppVeyor CI. Currently the unit tests are specific to
Linux, so all this does is ensure that the code will compile
on Windows.

Signed-off-by: “Rian <“rianquinn@gmail.com”>

appveyor.yml

@@ -0,0 +1,49 @@
+#
+# Custom environment variables
+#
+environment:
+    global:
+        CYG_ROOT: C:\cygwin64
+        CYG_MIRROR: http://cygwin.mirror.constant.com
+        CYG_CACHE: C:\cygwin64\var\cache\setup
+        CYG_BASH: C:\cygwin64\bin\bash
+
+#
+# Cache Cygwin files to speed up build
+#
+cache:
+    - '%CYG_CACHE%'
+
+#
+# Do a shallow clone of the repo to speed up build
+#
+clone_depth: 1
+
+#
+# Setup Cygwin
+#
+install:
+    - ps: 'Start-FileDownload "https://cygwin.com/setup-x86_64.exe" -FileName "setup-x86_64.exe"'
+    - 'setup-x86_64.exe --quiet-mode --no-shortcuts --only-site --root "%CYG_ROOT%" --site "%CYG_MIRROR%" --local-package-dir "%CYG_CACHE%" --packages gcc-core,gcc-g++'
+    - 'copy setup-x86_64.exe %CYG_ROOT%\bin\'
+    - '%CYG_BASH% -lc "cygcheck -dc cygwin"'
+
+#
+# Build Bareflank
+#
+build_script:
+    - 'echo Building...'
+    - '%CYG_BASH% -lc "cd $APPVEYOR_BUILD_FOLDER; ./tools/scripts/setup_cygwin.sh -l" > NUL 2>&1'
+    - '%CYG_BASH% -lc "cd $APPVEYOR_BUILD_FOLDER; make -j2"'
+
+#
+# Only build the master branch
+#
+branches:
+  only:
+    - master
+
+#
+# Disable tests for now
+#
+test: off