Simplified and reordered the arguments to build.generic.cmd and added default values

- always Clean,Rebuild
- output folder is now build/bin/{CONFIGURATION}/{ARCH}

build/build.VS2015.cmd

@@ -1,7 +1,7 @@
 @echo off
 
 rem build 32-bit
-call "%~p0%build.generic.cmd" VS2015 Release Rebuild Win32 v140
+call "%~p0%build.generic.cmd" VS2015 Win32 Release v140
 
 rem build 64-bit
-call "%~p0%build.generic.cmd" VS2015 Release Rebuild x64 v140
+call "%~p0%build.generic.cmd" VS2015 x64 Release v140