package/debian: disable -Bsymbolic-functions as it breaks Interconnect.

package/debian/rules

@@ -1,5 +1,15 @@
 #!/usr/bin/make -f
 
+# For some crappy reason Ubuntu includes this flag by default when building deb
+# packages. This breaks signal/slot connections across *.sos in
+# Corrade::Interconnect library (which may affect for example connecting the
+# signals to Application interfaces) and as said on the links below, it has
+# some noticeable unintended/dangerous effects as well, so I'm just disabling
+# it globally. See:
+#  http://stackoverflow.com/questions/7216973/is-there-a-downside-to-using-bsymbolic-functions
+#  https://software.intel.com/en-us/articles/performance-tools-for-software-developers-bsymbolic-can-cause-dangerous-side-effects
+export DEB_LDFLAGS_MAINT_STRIP = -Wl,-Bsymbolic-functions
+
 %:
 	dh $@ --parallel