Split the giant test binaries into smaller unit tests

This is an intermediate step to have smaller unit tests. It is a trade off
between having many many test executables compared to a few bigger ones. But
this comes a lot closer to what QtTest is meant to be used.

tests/blackmisc/teststringutils/teststringutils.pro

@@ -0,0 +1,27 @@
+load(common_pre)
+
+QT += core dbus testlib
+
+TARGET = teststringutils
+CONFIG   -= app_bundle
+CONFIG   += blackconfig
+CONFIG   += blackmisc
+CONFIG   += testcase
+CONFIG   += no_testcase_installs
+
+TEMPLATE = app
+
+DEPENDPATH += \
+    . \
+    $$SourceRoot/src \
+    $$SourceRoot/tests \
+
+INCLUDEPATH += \
+    $$SourceRoot/src \
+    $$SourceRoot/tests \
+
+SOURCES += teststringutils.cpp
+
+DESTDIR = $$DestRoot/bin
+
+load(common_post)