Added BOOKSELF and dsv setup procedure.

- BOOKSHELF: data sheets for the FT232RL and the C2 protocol
- Makefile: "make dsv" sets up the data sheet cache

BOOKSHELF

@@ -0,0 +1,22 @@
+#
+# Tags:
+#
+# N     name to use for dsv (must be first)
+# A     alias name(s)
+# D     data sheet url
+#
+
+N: ft232rl
+A: ft232r
+A: ft232
+D: http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232R.pdf
+
+N: d2xx
+D: http://www.ftdichip.com/Support/Documents/ProgramGuides/D2XX_Programmer's_Guide(FT_000071).pdf
+
+N: bitbang
+A: AN_232R-01
+D: http://www.ftdichip.com/Support/Documents/AppNotes/AN232R-01_FT232RBitBangModes.pdf
+
+N: c2
+D: http://www.silabs.com/Support%20Documents/TechnicalDocs/C2spec.pdf

Makefile

@@ -0,0 +1,9 @@
+.PHONY:		all dsv
+
+all:
+		@echo "make what ? target: dsv"
+		@exit 1
+
+dsv:
+		../eda-tools/dsv/dsv setup BOOKSHELF
+