Eventually move to internal header `internal/streamcopy.h`?

Based on 088e8173.

rapidjson.h:
 * StreamLocalCopy: add default argument to copy optimization selector
   based on StreamTraits of Stream parameter
 * drop operator->, operator*
 * make Stream (reference) member public
 * drop empty destructor

reader.h:
 * add local references, initialized from "copy"
   (reverts algorithmic bodies back to plain 's.xx()')

This reverts commit 63757f64.

Fix/Suppress all -Wall -Wextra -Weffc++ warnings on gcc 4.6.x - 4.8.x

Fixes local copy optimization

The previous optimization #32 has problem that restoration requires
assignment operator.
Change the backup/restore process using a template wrapper class to
select code path.

Adds Valgrind memcheck process to Tavis CI

Fixes parsing small floating point values underflow

https://code.google.com/p/rapidjson/issues/detail?id=75

The modification is slightly different from dlbattle123 to improve
speed.

Fixes IBM XL C/C++ for AIX issue

Move rapidjson::GenericValue::Member to rapidjson::GenericMember

https://code.google.com/p/rapidjson/issues/detail?id=64

Add interpreter
Change line endings
Fixes https://code.google.com/p/rapidjson/issues/detail?id=54

rapidjson -> RapidJSON

Issue23errorcode

Conflicts:
	example/condense/condense.cpp
	include/rapidjson/reader.h
	test/unittest/readertest.cpp

Make stream local copy optimization as trait option per stream type

need ‘typename’ before
‘rapidjson::StreamTraits<InputStream>::StreamCopyType

‘>>’ should be ‘> >’ within a nested template argument list

An unit test is added

Added overloaded functions for default parseFlags