[SPARK-13187][SQL] Add boolean/long/double options in DataFrameReader/Writer

[rxin]

This patch adds option function for boolean, long, and double types. This makes it slightly easier for Spark users to specify options without turning them into strings. Using the JSON data source as an example.

Before this patch:

sqlContext.read.option("primitivesAsString", "true").json("/path/to/json")

After this patch:
Before this patch:

sqlContext.read.option("primitivesAsString", true).json("/path/to/json")

[rxin]

cc @marmbrus

[SparkQA]

Test build #2518 has finished for PR 11072 at commit e1e0870.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #50774 has finished for PR 11072 at commit e453b59.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[zsxwing]

LGTM

[rxin]

Thanks - merging in master.