Whitespace changes, to untabify Ant files.

No review (per Scottb), but svn diff -x -w shows no non-whitespace
differences.

Identical scripting used here and in gwt1.5, so the merge shouldn't be 
painful.  If it is, I'm sure it will find its way to me, which is fine and 
as it should be. ;-)

 --This line, and those below, will be ignored--

M    jni/linux/build.xml
M    jni/mac/build.xml
M    jni/windows/build.xml
M    jni/build.xml
M    tools/benchmark-viewer/build.xml
M    tools/api-checker/build.xml
M    tools/build.xml
M    distro-source/linux/build.xml
M    distro-source/mac/build.xml
M    distro-source/common.ant.xml
M    distro-source/windows/build.xml
M    distro-source/build.xml
M    samples/i18n/build.xml
M    samples/mail/build.xml
M    samples/dynatable/build.xml
M    samples/hello/build.xml
M    samples/common.ant.xml
M    samples/json/build.xml
M    samples/simplexml/build.xml
M    samples/showcase/build.xml
M    samples/simplerpc/build.xml
M    samples/build.xml
M    servlet/build.xml
M    doc/build.xml
M    platforms.ant.xml
M    common.ant.xml
M    build-tools/ant-gwt/build.xml
M    build-tools/doctool/build.xml
M    build-tools/customchecks/build.xml
M    build-tools/build.xml
M    dev/linux/build.xml
M    dev/mac/build.xml
M    dev/core/build.xml
M    dev/common.ant.xml
M    dev/windows/build.xml
M    dev/build.xml
M    user/build.xml
M    build.xml


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@3558 8db76d5a-ed1c-0410-87a9-c151d255dfc7
38 files changed