Fix a cosmetic bug where Version wasn't being generated for
install-in-build-tree scenarios.

Signed-off-by: Garrett Cooper <yanegomi@gmail.com>
diff --git a/Makefile b/Makefile
index 87295a7..53e4360 100644
--- a/Makefile
+++ b/Makefile
@@ -85,7 +85,7 @@
 # There's no reason why we should run `all' twice. Otherwise we're just wasting
 # 3+ mins of useful CPU cycles on a modern machine, and even more time on an
 # overtaxed one, or one where -j => 1 was specified.
-all: $(addsuffix -all,$(COMMON_TARGETS))
+all: $(addsuffix -all,$(COMMON_TARGETS)) Version
 
 $(MAKE_TARGETS): lib-all