Moved Quotes into commands

Moving the quotes down into the commands allows for LD_FLAGS to be extended if need be.

GNUmakefile

@@ -5,7 +5,7 @@ THIS_OS := $(shell uname)
 GIT_COMMIT := $(shell git rev-parse HEAD)
 GIT_DIRTY := $(if $(shell git status --porcelain),+CHANGES)
 
-GO_LDFLAGS := "-X github.com/hashicorp/nomad/version.GitCommit=$(GIT_COMMIT)$(GIT_DIRTY)"
+GO_LDFLAGS := -X github.com/hashicorp/nomad/version.GitCommit=$(GIT_COMMIT)$(GIT_DIRTY)
 GO_TAGS =
 
 default: help
@@ -81,7 +81,7 @@ pkg/freebsd_amd64/nomad: $(SOURCE_FILES) ## Build Nomad for freebsd/amd64
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=freebsd GOARCH=amd64 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@"
 
@@ -89,7 +89,7 @@ pkg/linux_386/nomad: $(SOURCE_FILES) ## Build Nomad for linux/386
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=linux GOARCH=386 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@"
 
@@ -97,7 +97,7 @@ pkg/linux_amd64/nomad: $(SOURCE_FILES) ## Build Nomad for linux/amd64
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=linux GOARCH=amd64 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@"
 
@@ -105,7 +105,7 @@ pkg/linux_arm/nomad: $(SOURCE_FILES) ## Build Nomad for linux/arm
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=linux GOARCH=arm CC=arm-linux-gnueabihf-gcc-5 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@"
 
@@ -113,7 +113,7 @@ pkg/linux_arm64/nomad: $(SOURCE_FILES) ## Build Nomad for linux/arm64
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=linux GOARCH=arm64 CC=aarch64-linux-gnu-gcc-5 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@"
 
@@ -126,7 +126,7 @@ pkg/windows_386/nomad: $(SOURCE_FILES) ## Build Nomad for windows/386
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=windows GOARCH=386 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@.exe"
 
@@ -134,7 +134,7 @@ pkg/windows_amd64/nomad: $(SOURCE_FILES) ## Build Nomad for windows/amd64
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=windows GOARCH=amd64 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS)" \
 		-o "$@.exe"
 
@@ -142,7 +142,7 @@ pkg/linux_amd64-lxc/nomad: $(SOURCE_FILES) ## Build Nomad+LXC for linux/amd64
 	@echo "==> Building $@ with tags $(GO_TAGS)..."
 	@CGO_ENABLED=1 GOOS=linux GOARCH=amd64 \
 		go build \
-		-ldflags $(GO_LDFLAGS) \
+		-ldflags "$(GO_LDFLAGS)" \
 		-tags "$(GO_TAGS) lxc" \
 		-o "$@"