DO NOT MERGE enable tor's restart debugging

This should not be merged because it is a dev-only, insecure feature.

external/Makefile

@@ -261,6 +261,7 @@ zstd-clean:
 #------------------------------------------------------------------------------#
 # tor
 
+# TODO --enable-restart-debugging should not be shipped, it is insecure
 tor/Makefile: tor/configure.ac tor/Makefile.am
 	@which pkg-config || (echo "ERROR: pkg-config is required! apt-get install pkg-config"; exit 1)
 	cd tor && ./autogen.sh
@@ -270,6 +271,7 @@ tor/Makefile: tor/configure.ac tor/Makefile.am
 				--enable-android \
 				--enable-lzma \
 				--enable-pic \
+				--enable-restart-debugging \
 				--enable-static-libevent --with-libevent-dir=$(EXTERNAL_ROOT) \
 				--enable-static-openssl --with-openssl-dir=$(EXTERNAL_ROOT) \
 				--enable-zstd \