rework building both static and dynamic libraries - only one name for common lib
simplify - always build shared libraries, always build libdmtx.suffix
try to address travis-ci failure
Merge pull request #30 from gilmoskowitz/sharedLibrariesAutobuild

always build shared libraries
Merge branch 'master' of https://github.com/xtuple/openrpt into fixwarnings1

Conflicts:
	OpenRPT/renderapp/renderapp.pro
	OpenRPT/renderer/renderer.pro
	OpenRPT/writer/writer.pro