Enhance the vendor script to build the libraries
Enhance the vendor script to build the libraries

Change-Id: I9e018591dc04ad1b79634f5d3164ae3d8ca13cfd
Reviewed-on: https://swiftshader-review.googlesource.com/3060
Reviewed-by: Nicolas Capens <0612353e1fcebbfd4b302d9337447ca0cdfa9122@google.com>
Tested-by: Greg Hartman <1491e78df1ea2169b62fa2ceaf1a32538792aab8@google.com>

google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,google/swiftshader