refs #403 refactor project files

* Use source path and build path instead of relative ones
* Unify pre target dependencies in libraries.pri

samples/blackmiscquantities/sample_quantities_aviation.pro

@@ -1,5 +1,5 @@
-include (../../config.pri)
-include (../../build.pri)
+include ($$SourceRoot/config.pri)
+include ($$SourceRoot/build.pri)
 
 QT       += core dbus network
 
@@ -10,15 +10,12 @@ CONFIG   += console
 CONFIG   -= app_bundle
 CONFIG   += blackmisc
 
-DEPENDPATH += . ../../src/blackmisc
-INCLUDEPATH += . ../../src
+DEPENDPATH += . $$SourceRoot/src/blackmisc
+INCLUDEPATH += . $$SourceRoot/src
 
-win32:!win32-g++*: PRE_TARGETDEPS += ../../lib/blackmisc.lib
-else:              PRE_TARGETDEPS += ../../lib/libblackmisc.a
-
-DESTDIR = ../../bin
+DESTDIR = $$BuildRoot/bin
 
 HEADERS += *.h
 SOURCES += *.cpp
 
-include (../../libraries.pri)
+include ($$SourceRoot/libraries.pri)