Fix warnings in headers because application/user settings control what warnings are seen when compiling against poco
Merge pull request #371 from patrickjwhite/header-warnings

Fix warnings in headers visible to poco user
XMLWriter: removed unnecessary apostrophe escaping (&apos)
Visual Studio 2013 support
fixed small typo
Merge pull request #372 from iyedb/develop

fixed small typo
added VS2013 support to buildwin
fixed buildwin
powershell build script
removed unnecessary function
updated documentation/help
build tool handling
Fixed VS 2012 project files
SmartOS build
fixed overflow bug on Windows
Poco::ByteOrder now uses intrinsics, if available
remove __builtin_bswap16
fix for gcc
fix for gcc
SessionPool diagnostics