message: build: refactor build alias
diff: const path = require('path')
  +const resolve = p => path.resolve(__dirname, '../', p)
  +
  module.exports = {
  - vue: path.resolve(__dirname, '../src/platforms/web/entry-runtime-with-compiler'),
  - compiler: path.resolve(__dirname, '../src/compiler'),
  - core: path.resolve(__dirname, '../src/core'),
  - shared: path.resolve(__dirname, '../src/shared'),
  - web: path.resolve(__dirname, '../src/platforms/web'),
  - weex: path.resolve(__dirname, '../src/platforms/weex'),
  - server: path.resolve(__dirname, '../src/server'),
  - entries: path.resolve(__dirname, '../src/entries'),
  - sfc: path.resolve(__dirname, '../src/sfc')
  + vue: resolve('src/platforms/web/entry-runtime-with-compiler'),
  + compiler: resolve('src/compiler'),
  + core: resolve('src/core'),
  + shared: resolve('src/shared'),
  + web: resolve('src/platforms/web'),
  + weex: resolve('src/platforms/weex'),
  + server: resolve('src/server'),
  + entries: resolve('src/entries'),
  + sfc: resolve('src/sfc')
  }
  