Library gets compiled to SO/DLL by default

- static library can still be built with "SHARED=n" option
- install and uninstall targets added to library makefiles (linux and windows)
- makefiles for the sample applications modified to work with an installed
  library as well as non installed one
- extra warnings added to LibTestApp and fixed numerous warnings
  related to this application

Change-Id: Ib0b3a91c2d61a929317b6f5e31c775b6afcf5f9a