Prepare Equinox app for multiproject build

We already configured Equinox products, now we can prepare Equinox app for multiproject build.

1. Create "build.gradle" in "tutorials" folder (parent of "MyRcpApp" folder)

2. Move "buildscript" and "repositories" from "tutorials/MyRcpApp/build.gradle" to "tutorials/build.gradle", so that two scripts look like this:

"tutorials/build.gradle":

buildscript {
  repositories {
    mavenLocal()
    jcenter()
  }
  
  dependencies {
    classpath 'org.akhikhl.wuff:wuff-plugin:0.0.1'
  }
}

subprojects {
  repositories {
    mavenLocal()
    jcenter()
  }
}

"tutorials/MyRcpApp/build.gradle":

apply plugin: 'java'
apply plugin: 'eclipse-rcp-app'
  
products {
  product platform: 'linux', arch: 'x86_32'
  product platform: 'linux', arch: 'x86_64'
  product platform: 'windows', arch: 'x86_32'
  product platform: 'windows', arch: 'x86_64'
  archiveProducts = true
}

3. Create "settings.gradle" in "tutorials" folder (parent of "MyRcpApp" folder), insert code:

include 'MyRcpApp'

4. Invoke on command line in "tutorials" folder:

gradle build

CHECK: Build task generates products in "tutorials/MyEquinoxApp/build/output" folder.

The example code corresponding to this page is located in tutorialExamples/EquinoxApp-3.

Now we can move on to Create OSGi-bundle and use it in Equinox app.