Add targets to install the files at the system

In order to be easier to package the scan tables, add
some targets to install the files, and add the instructions
about how to use it at the README file.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Makefile

@@ -14,6 +14,7 @@ MKDIR = mkdir -p
 DVBFORMATCONVERT = dvb-format-convert
 
 DVBV3DIRS = atsc dvb-c dvb-s dvb-t
+DVBV5DIRS = $(DVBV3DIRS) isdb-t
 
 DVBV3CHANNELFILES = $(foreach dir,$(DVBV3DIRS),$(wildcard $(dir)/*))
 
@@ -25,6 +26,22 @@ DVBV5OUTPUTDIR = dvbv5
 
 PHONY := clean dvbv3 dvbv5
 
+ifeq ($(PREFIX),)
+PREFIX = /usr/local
+endif
+
+ifeq ($(DATADIR),)
+DATADIR = $(PREFIX)/share
+endif
+
+ifeq ($(DVBV5DIR),)
+DVBV5DIR = dvbv5
+endif
+
+ifeq ($(DVBV3DIR),)
+DVBV3DIR = dvbv3
+endif
+
 dvbv3:
 	@$(foreach var,$(DVBV3DIRS), $(MKDIR) $(DVBV3OUTPUTDIR)/$(var);)
 	@$(foreach var,$(DVBV3CHANNELFILES), $(DVBFORMATCONVERT) $(DVBFORMATCONVERT_CHANNEL_DVBV3) $(var) $(DVBV3OUTPUTDIR)/$(var);)
@@ -34,6 +51,13 @@ dvbv5: $(DVBV3OUTPUTDIR)
 	@$(foreach var,$(DVBV3DIRS), $(MKDIR) $(DVBV5OUTPUTDIR)/$(var);)
 	@$(foreach var,$(DVBV3CHANNELFILES), $(DVBFORMATCONVERT) $(DVBFORMATCONVERT_CHANNEL_DVBV5) $(DVBV3OUTPUTDIR)/$(var) $(DVBV5OUTPUTDIR)/$(var);)
 
+install:
+	@mkdir -p $(DATADIR)/$(DVBV5DIR)
+	$(foreach var,$(DVBV5DIRS), install -d -p $(DATADIR)/$(DVBV5DIR)/$(var); install -D -p -m 644 $(var)/* $(DATADIR)/$(DVBV5DIR)/$(var);)
+
+install_v3:
+	@mkdir -p $(DATADIR)/$(DVBV3DIR)
+	$(foreach var,$(DVBV3DIRS), install -d -p $(DATADIR)/$(DVBV3DIR)/$(var); install -D -p -m 644 $(DVBV3OUTPUTDIR)/$(var)/* $(DATADIR)/$(DVBV3DIR)/$(var);)
 
 clean:
 	rm -rf $(DVBV3OUTPUTDIR)/ $(DVBV5OUTPUTDIR)/