Fix Makefile and install script for the new project layout

Makefile

@@ -92,16 +92,16 @@ release-all: clean test
 
 $(SRC_LINK):
 	mkdir -p $(shell dirname $(SRC_LINK))
-	ln -s $(ROOT_DIR)/src $(SRC_LINK)
+	ln -sf $(ROOT_DIR)/src $(SRC_LINK)
 
 $(VENDOR_LINK):
 	mkdir -p $(shell dirname $(VENDOR_LINK))
-	ln -s $(ROOT_DIR)/vendor $(VENDOR_LINK)
+	ln -sf $(ROOT_DIR)/vendor $(VENDOR_LINK)
 
-$(GLIDE_LOCK): $(GLIDE_YAML)
+vendor: $(GLIDE_YAML)
 	go get -u github.com/Masterminds/glide && $(GOPATH)/bin/glide install && touch $@
 
-test: $(SOURCES)
+test: $(SOURCES) vendor
 	SHELL=/bin/sh GOOS= go test -v -tags "$(TAGS)" \
 				github.com/junegunn/fzf/src \
 				github.com/junegunn/fzf/src/algo \
@@ -113,23 +113,23 @@ install: bin/fzf
 clean:
 	rm -rf target
 
-target/$(BINARY32): $(SOURCES)
+target/$(BINARY32): $(SOURCES) vendor
 	GOARCH=386 go build $(BUILD_FLAGS) -o $@
 
-target/$(BINARY64): $(SOURCES)
+target/$(BINARY64): $(SOURCES) vendor
 	GOARCH=amd64 go build $(BUILD_FLAGS) -o $@
 
 # https://github.com/golang/go/wiki/GoArm
-target/$(BINARYARM5): $(SOURCES)
+target/$(BINARYARM5): $(SOURCES) vendor
 	GOARCH=arm GOARM=5 go build $(BUILD_FLAGS) -o $@
 
-target/$(BINARYARM6): $(SOURCES)
+target/$(BINARYARM6): $(SOURCES) vendor
 	GOARCH=arm GOARM=6 go build $(BUILD_FLAGS) -o $@
 
-target/$(BINARYARM7): $(SOURCES)
+target/$(BINARYARM7): $(SOURCES) vendor
 	GOARCH=arm GOARM=7 go build $(BUILD_FLAGS) -o $@
 
-target/$(BINARYARM8): $(SOURCES)
+target/$(BINARYARM8): $(SOURCES) vendor
 	GOARCH=arm64 go build $(BUILD_FLAGS) -o $@
 
 bin/fzf: target/$(BINARY) | bin

install

@@ -169,12 +169,12 @@ if [ -n "$binary_error" ]; then
     echo "  - $binary_error !!!"
   fi
   if command -v go > /dev/null; then
-    echo -n "Building binary (go get -u github.com/junegunn/fzf/src/fzf) ... "
+    echo -n "Building binary (go get -u github.com/junegunn/fzf) ... "
     if [ -z "${GOPATH-}" ]; then
       export GOPATH="${TMPDIR:-/tmp}/fzf-gopath"
       mkdir -p "$GOPATH"
     fi
-    if go get -u github.com/junegunn/fzf/src/fzf; then
+    if go get -u github.com/junegunn/fzf; then
       echo "OK"
       cp "$GOPATH/bin/fzf" "$fzf_base/bin/"
     else