Fix topdir Makefile and debian packaging

Make building the debian packages work again. I've verified that it
works in my own OBS namespace.

This patch also adds missing pkgconf variables in host/Makefile.am, so
libosmo-simtrace2.pc installs properly.

Related: OS#4283
Fixes: 964cda309d ("host: use autotools and split shared code to libosmo-simtrace2")
Change-Id: I2377de1e8b149520922217a1ab16f6e22fe6462a

debian/rules

@@ -1,4 +1,19 @@
 #!/usr/bin/make -f
 
+# Uncomment this to turn on verbose mode.
+#export DH_VERBOSE=1
+
+DEBIAN  := $(shell dpkg-parsechangelog | grep ^Version: | cut -d' ' -f2)
+DEBVERS := $(shell echo '$(DEBIAN)' | cut -d- -f1)
+VERSION := $(shell echo '$(DEBVERS)' | sed -e 's/[+-].*//' -e 's/~//g')
+
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
+export DEB_LDFLAGS_MAINT_STRIP = -Wl,-Bsymbolic-functions
+
+
 %:
 	dh $@
+
+override_dh_autoreconf:
+	cd host && dh_autoreconf