18.0.0.600-1

• Updated Mesa3D to 18.0.0

Build environment updates

• pip 9.0.2 -> 9.0.3
• Visual Studio 15.6.3 -> 15.6.4
• git 2.16.2.1 -> 2.16.3.1

Build guide

• Remove a relic about Windows XP/PosReady 2009, it is no longer supported since Mesa3D 17.2.0;
• Describe the official way of loading git in PATH when using Git portable.

Deployment

• Add uninstall and update support to system-wide deployment tool.