Completed enumeration of audio devices

refs #36
- Cvatlib_Voice_Simple object is created and setup
- enumerates automatically a list of in and output devices.
- both device lists are accessable immediately
- added a sample demonstrating the interface so far

refs #81

samples/voiceclient/sample_voice_client.pro

@@ -0,0 +1,26 @@
+include (../../externals.pri)
+
+QT       += core dbus
+QT       -= gui
+
+TARGET = sample_voice_client
+TEMPLATE = app
+
+CONFIG   += console c++11
+CONFIG   -= app_bundle
+
+DEPENDPATH += . ../../src
+INCLUDEPATH += . ../../src
+
+SOURCES += *.cpp
+HEADERS += *.h
+
+LIBS    += -L../../lib -lblackcore -lblackmisc
+LIBS	+= -lvatlib
+
+win32:!win32-g++*: PRE_TARGETDEPS += ../../lib/blackmisc.lib \
+                                     ../../lib/blackcore.lib
+else:              PRE_TARGETDEPS += ../../lib/libblackmisc.a \
+                                     ../../lib/libblackcore.a
+
+DESTDIR = ../../bin