build: add generated sources

Before this commit LWJGL generated sources were tracked in the
lwjgl3-generated repository. That repository has been archived and
generated sources will exist here from now on. Keeping them separate
was not practical anymore after moving to the new directory structure.

The generated sources are added here without any commit history, to
avoid bloating the clone size of this repository (would be more than
doubled). Earlier history can be explored manually in the read-only
lwjgl3-generated repository.

.gitignore

@@ -1,7 +1,5 @@
 /.idea/workspace.xml
 /bin
-/modules/lwjgl/*/src/generated/**
-/modules/lwjgl/.git
 /wiki
 .gradle
 .DS_Store

build.xml

@@ -33,60 +33,6 @@
         <taskdef resource="testngtasks" classpath="${lib}/java/testng.jar"/>
     </target>
 
-    <target name="init-generated" description="Initializes the lwjgl3-generated git repository. [Optional]">
-        <local name="input"/>
-        <input
-            message="This action will create a separated git repository at ../lwjgl3-generated/. The repository root will be under modules/lwjgl/. Continue?"
-            validargs="y,n"
-            defaultvalue="n"
-            addproperty="input"
-        />
-        <fail message="Cancelled.">
-            <condition>
-                <equals arg1="n" arg2="${input}"/>
-            </condition>
-        </fail>
-
-        <local name="lwjgl3-generated.exists"/>
-
-        <available file="${module.lwjgl}/.git" property="lwjgl3-generated.exists"/>
-        <fail if="lwjgl3-generated.exists" message="The lwjgl3-generated repository is already initialized." />
-        <available file="../lwjgl3-generated" type="dir" property="lwjgl3-generated.exists"/>
-
-        <!-- Initialize repository -->
-        <exec dir="${module.lwjgl}" executable="git" failonerror="true" taskname="git">
-            <arg value="init"/>
-            <arg value="--separate-git-dir=../../../lwjgl3-generated"/>
-        </exec>
-
-        <!-- Add clone-specific ignore rules -->
-        <concat
-            destfile="../lwjgl3-generated/info/exclude"
-            append="true" outputencoding="UTF-8" fixlastline="true" eol="lf"
-            unless:set="lwjgl3-generated.exists"
-        >touch.txt
-*_license.txt
-**/main/**
-**/test/**</concat>
-
-        <!-- Setup remote & fetch -->
-        <exec dir="${module.lwjgl}" executable="git" failonerror="true" taskname="git" unless:set="lwjgl3-generated.exists">
-            <arg value="remote"/>
-            <arg value="add"/>
-            <arg line="-t master"/>
-            <arg line="-m master"/>
-            <arg value="-f"/>
-            <arg value="origin"/>
-            <arg value="https://github.com/LWJGL/lwjgl3-generated.git"/>
-        </exec>
-
-        <!-- Checkout master -->
-        <exec dir="${module.lwjgl}" executable="git" failonerror="true" taskname="git" unless:set="lwjgl3-generated.exists">
-            <arg value="checkout"/>
-            <arg line="master"/>
-        </exec>
-    </target>
-
     <target name="init-wiki" description="Initializes the lwjgl3-wiki git repository in /wiki. [Optional]">
         <confirm-replace dir="wiki" msg="The wiki directory contents will be replaced with a fresh clone of the lwjgl3-wiki repository. Continue?"/>