remove GitDescribe - no such variable defined in version package

- add "-w -s" flags to reduce binary size (they remove debug info)

scripts/dist_build.sh

@@ -11,7 +11,6 @@ cd "$DIR"
 
 # Get the git commit
 GIT_COMMIT="$(git rev-parse --short HEAD)"
-GIT_DESCRIBE="$(git describe --tags --always)"
 GIT_IMPORT="github.com/tendermint/tendermint/version"
 
 # Determine the arch/os combos we're building for
@@ -25,12 +24,14 @@ make tools
 make get_vendor_deps
 
 # Build!
+# ldflags: -s Omit the symbol table and debug information.
+#	         -w Omit the DWARF symbol table.
 echo "==> Building..."
 "$(which gox)" \
 		-os="${XC_OS}" \
 		-arch="${XC_ARCH}" \
 		-osarch="!darwin/arm !solaris/amd64 !freebsd/amd64" \
-		-ldflags "-X ${GIT_IMPORT}.GitCommit='${GIT_COMMIT}' -X ${GIT_IMPORT}.GitDescribe='${GIT_DESCRIBE}'" \
+		-ldflags "-s -w -X ${GIT_IMPORT}.GitCommit='${GIT_COMMIT}'" \
 		-output "build/pkg/{{.OS}}_{{.Arch}}/tendermint" \
 		-tags="${BUILD_TAGS}" \
 		github.com/tendermint/tendermint/cmd/tendermint