debian/rules: Add a comment explaining why we do weird test things.

diff --git a/debian/rules b/debian/rules
index e64e6b4..d93449a 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -1,6 +1,7 @@
 #! /usr/bin/make -f
 %:; dh $@ --parallel -Bdebian/build
 
+## Test both with and without CPU-specific optimizations.
 override_dh_auto_test:
        dh_auto_test --parallel -Bdebian/build
        CATACOMB_CPUFEAT="-*" dh_auto_test --parallel -Bdebian/build