GH #127: Eliminate -Wshadow warnings

- fixed GH #127: Eliminate -Wshadow warnings
- SocketAddress small object optimization
mac/clang build fixes
linux/gcc build fixes
only style changes
GH #79: Poco::Thread leak on Linux

fixed GH #79: Poco::Thread leak on Linux
GH #61: static_md build configs for Crypto and NetSSL

fixed GH #61: static_md build configs for Crypto and NetSSL
CHANGELOG update
few JSON fixes and tests
GH #130 and #131

- fixed GH #130: Patch: prefer sysconf over sysctlbyname
- fixed GH #131: Patch: no timezone global var on OpenBSD
added missing Data x64 solutions for VS 2010

- fixed GH #102: Some subprojects don't have x64 solutions for VS 2010
GH #75: Poco::Uri addQueryParameter method

- added GH #75: Poco::Uri addQueryParameter method
updated CHANGELOG