[SPARK-1876] Windows fixes to deal with latest distribution layout changes

- Look for JARs in the right place
- Launch examples the same way as on Unix
- Load datanucleus JARs if they exist
- Don't attempt to parse local paths as URIs in SparkSubmit, since paths with C:\ are not valid URIs
- Also fixed POM exclusion rules for datanucleus (it wasn't properly excluding it, whereas SBT was)

Author: Matei Zaharia <matei@databricks.com>

Closes #819 from mateiz/win-fixes and squashes the following commits:

d558f96 [Matei Zaharia] Fix comment
228577b [Matei Zaharia] Review comments
d3b71c7 [Matei Zaharia] Properly exclude datanucleus files in Maven assembly
144af84 [Matei Zaharia] Update Windows scripts to match latest binary package layout

(cherry picked from commit 7b70a7071894dd90ea1d0091542b3e13e7ef8d3a)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
SPARK-1878: Fix the incorrect initialization order

JIRA: https://issues.apache.org/jira/browse/SPARK-1878

Author: zsxwing <zsxwing@gmail.com>

Closes #822 from zsxwing/SPARK-1878 and squashes the following commits:

4a47e27 [zsxwing] SPARK-1878: Fix the incorrect initialization order

(cherry picked from commit 1811ba8ccb580979aa2e12019e6a82805f09ab53)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
SPARK-1879. Increase MaxPermSize since some of our builds have many classes

See https://issues.apache.org/jira/browse/SPARK-1879 -- builds with Hadoop2 and Hive ran out of PermGen space in spark-shell, when those things added up with the Scala compiler.

Note that users can still override it by setting their own Java options with this change. Their options will come later in the command string than the -XX:MaxPermSize=128m.

Author: Matei Zaharia <matei@databricks.com>

Closes #823 from mateiz/spark-1879 and squashes the following commits:

6bc0ee8 [Matei Zaharia] Increase MaxPermSize to 128m since some of our builds have lots of classes

(cherry picked from commit 5af99d7617ba3b9fbfdb345ef9571b7dd41f45a1)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
[SPARK-1875]NoClassDefFoundError: StringUtils when building with hadoop 1.x and hive

Author: witgo <witgo@qq.com>

Closes #824 from witgo/SPARK-1875_commons-lang-2.6 and squashes the following commits:

ef7231d [witgo] review commit
ead3c3b [witgo] SPARK-1875:NoClassDefFoundError: StringUtils when building against Hadoop 1

(cherry picked from commit 6a2c5c610c259f62cb12d8cfc18bf59cdb334bb2)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
SPARK-1689: Spark application should die when removed by Master

scheduler.error() will mask the error if there are active tasks. Being removed is a cataclysmic event for Spark applications, and should probably be treated as such.

Author: Aaron Davidson <aaron@databricks.com>

Closes #832 from aarondav/i-love-u and squashes the following commits:

9f1200f [Aaron Davidson] SPARK-1689: Spark application should die when removed by Master

(cherry picked from commit b0ce22e071da4cc62ec5e29abf7b1299b8e4a6b0)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
[SPARK-1874][MLLIB] Clean up MLlib sample data

1. Added synthetic datasets for `MovieLensALS`, `LinearRegression`, `BinaryClassification`.
2. Embedded instructions in the help message of those example apps.

Per discussion with Matei on the JIRA page, new example data is under `data/mllib`.

Author: Xiangrui Meng <meng@databricks.com>

Closes #833 from mengxr/mllib-sample-data and squashes the following commits:

59f0a18 [Xiangrui Meng] add sample binary classification data
3c2f92f [Xiangrui Meng] add linear regression data
050f1ca [Xiangrui Meng] add a sample dataset for MovieLensALS example

(cherry picked from commit bcb9dce6f444a977c714117811bce0c54b417650)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
[Spark 1877] ClassNotFoundException when loading RDD with serialized objects

Updated version of #821

Author: Tathagata Das <tathagata.das1565@gmail.com>
Author: Ghidireac <bogdang@u448a5b0a73d45358d94a.ant.amazon.com>

Closes #835 from tdas/SPARK-1877 and squashes the following commits:

f346f71 [Tathagata Das] Addressed Patrick's comments.
fee0c5d [Ghidireac] SPARK-1877: ClassNotFoundException when loading RDD with serialized objects

(cherry picked from commit 52eb54d02403a3c37d84b9da7cc1cdb261048cf8)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>
Updated CHANGES.txt
Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit f8e611955096c5c1c7db5764b9d2851b1d295f0d.
Revert "[maven-release-plugin] prepare release v1.0.0-rc9"

This reverts commit 920f947eb5a22a679c0c3186cf69ee75f6041c75.