readme: mention unit tests directory
readme: also mention the shared directory.
gtest: stop compiling gtest libraries on installation
unittest: build gtest-all and gtest_main directly
Merge pull request #173 from solidgoldbomb/gtest-tap-listener

gtest tap listener
Merge pull request #166 from solidgoldbomb/mention-unittests

HOWTO: Convert an issue to a pull-request.
Fixed GCS windows qmakefile bug.
Merge branch 'next' into packaging
Quantec plugin: Update the include to the new one after merging next