[Hadoop Wiki] Update of "HowToRelease" by NigelDaley

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The following page has been changed by NigelDaley:
http://wiki.apache.org/hadoop/HowToRelease

The comment on the change is:
Update for Hadoop 0.20.0

------------------------------------------------------------------------------
  ''This page is prepared for Hadoop Core committers. You need committer rights 
  to create a new  Hadoop Core release.''
+ 
+ These instructions have been updated for Hadoop 0.20.0 and later releases.  For earlier releases, check out an [http://wiki.apache.org/hadoop/HowToRelease?action=recall&rev=48 older revision] of this page.
  
  = Preparation =
  
@@ -13, +15 @@

  
  	1. Notify developers on the #hadoop IRC channel that you are about to branch a release. 
  	1. Update {{{CHANGES.txt}}} to include the release version and date (use {{{Unreleased}}} for the date if it is unknown) and remove {{{Trunk (unreleased changes)}}}.
- 	1. Regenerate the documentation. {{{
- ant docs
- }}}
  	1. Commit these changes to trunk. {{{
  svn commit -m "Preparing for release X.Y.Z"
  }}}
@@ -37, +36 @@

  	1. Check out the branch with: {{{
  svn co https://svn.apache.org/repos/asf/hadoop/core/branches/branch-X.Y
  }}}
+ 	1. Update {{{CHANGES.txt}}} to include the release version and date (this change must be committed to trunk and any intermediate branches between trunk and the branch being released).
- 	1. Update {{{CHANGES.txt}}} to include the release version and date.
- 	1. Regenerate the documentation. {{{
- ant docs
- }}}
- 	1. Update {{{docs/releasenotes.html}}} with release notes for this release.
+ 	1. Update {{{src/docs/releasenotes.html}}} with release notes for this release.
  	1. Update the version number in {{{build.xml}}} to be ''hadoop-X.Y.N-dev'', where ''N'' is one greater than the release being made.
  	1. Commit these changes. {{{
  svn commit -m "Preparing for release X.Y.Z"
@@ -65, +61 @@

  
    1. Have a recent version of [http://www.eclipse.org/ Eclipse] installed, so that the eclipse plugin will build.
  
-   1. Have [http://jdiff.sourceforge.net/ JDiff] 1.1.1 or later installed.
- 
    1. Have [http://xerces.apache.org/xerces-c/download.cgi Xerces C] 2.8.x installed.
  
  = Building =
@@ -75, +69 @@

  export JAVA_HOME=/path/to/32bit/jdk
  export CFLAGS=-m32
  export CXXFLAGS=-m32
- ant -Dversion=X.Y.Z -Dcompile.native=true -Dcompile.c++=true -Dlibhdfs=1 -Dlibrecordio=true -Dxercescroot=/usr/local/xerces-c -Declipse.home=/usr/lib/eclipse -Djdiff.home=/usr/local/jdiff clean package-libhdfs api-report tar test test-libhdfs
+ ant -Dversion=X.Y.Z -Dcompile.native=true -Dcompile.c++=true -Dlibhdfs=1 -Dlibrecordio=true -Dxercescroot=/usr/local/xerces-c -Declipse.home=/usr/lib/eclipse -Dforrest.home=/usr/local/forrest -Djava5.home=/usr/local/jdk1.5 clean api-report tar test test-c++-libhdfs
  export JAVA_HOME=/path/to/64bit/jdk
  export CFLAGS=-m64
  export CXXFLAGS=-m64