Add implementation of analog TV signal generator (PAL so far)

Quick and dirty Howto:
make && tv/osmotv --sdr-soapy --sdr-tx-gain 60  -r 15000000 -c 21 tx-fubk --sdr-tune-args "OFFSET=-3000000"

src/tv/Makefile.am

@@ -0,0 +1,40 @@
+AM_CPPFLAGS = -Wall -Wextra -g $(all_includes) -fstack-check
+
+bin_PROGRAMS = \
+	osmotv
+
+osmotv_SOURCES = \
+	bas.c \
+	fubk.c \
+	font.c \
+	vcr.c \
+	image.c \
+	tv_modulate.c \
+	channels.c \
+	main.c
+osmotv_LDADD = \
+	$(COMMON_LA) \
+	$(top_builddir)/src/common/libimage.a \
+	$(top_builddir)/src/common/libcommon.a \
+	$(ALSA_LIBS) \
+	$(UHD_LIBS) \
+	$(SOAPY_LIBS) \
+	$(GRAPHICSMAGICK_LIBS) $(IMAGEMAGICK_LIBS) \
+	-lm
+
+if HAVE_SDR
+AM_CPPFLAGS += -DHAVE_SDR
+endif
+
+if HAVE_UHD
+AM_CPPFLAGS += -DHAVE_UHD
+endif
+
+if HAVE_SOAPY
+AM_CPPFLAGS += -DHAVE_SOAPY
+endif
+
+if ENABLE_MAGICK
+AM_CPPFLAGS += -DWITH_MAGICK
+endif
+