Fix SPARK-1629: Spark should inline use of commons-lang `SystemUtils.IS_...

...OS_WINDOWS`

Author: witgo <witgo@qq.com>

Closes #569 from witgo/SPARK-1629 and squashes the following commits:

31520eb [witgo] Merge branch 'master' of https://github.com/apache/spark into SPARK-1629
fcaafd7 [witgo] merge mastet
49e248e [witgo] Fix SPARK-1629: Spark should inline use of commons-lang `SystemUtils.IS_OS_WINDOWS`
(cherry picked from commit 55100daa6509bed851f6932845deffa861fef245)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>
SPARK-1691: Support quoted arguments inside of spark-submit.

This is a fairly straightforward fix. The bug was reported by @vanzin and the fix was proposed by @deanwampler and myself. Please take a look!

Author: Patrick Wendell <pwendell@gmail.com>

Closes #609 from pwendell/quotes and squashes the following commits:

8bed767 [Patrick Wendell] SPARK-1691: Support quoted arguments inside of spark-submit.
(cherry picked from commit 98b65593bdcfea54010f8c0fdf2a2b840f18c283)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>