Added building for arm, x86, and x64 with Gradle. This only builds ntcore currently, I'm working getting Google Test to work.

.gitignore

@@ -0,0 +1,35 @@
+### C++ ###
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+build/
+.gradle/
+
+.vs/
+*.def
+*.opensdf
+*.vcxproj
+*.vcxproj.user
+*.sdf