General rework of the build process (distribution source and rpm).

changelog.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+ver=$(git describe --dirty --long --match='v[0-9]*.[0-9]*' | cut -c 2- | cut -d - -f 1,2,4)
+rpm_ver="${ver%%-*}"
+rpm_rev="${ver#*-}"
+rpm_numeric_rev="${rpm_rev%%-*}"
+
+change="* $(date +'%a %b %d %Y') $(git log -1 --format='%aN <%aE>') - ${rpm_ver}-${rpm_numeric_rev}
+- $(git log -1 --format=%s)
+"
+
+awk -v change="${change}" '/^%changelog/ {print; print change; next} 1' gwebu-profile.spec.in \
+    > gwebu-profile.spec.tmp && mv gwebu-profile.spec.tmp gwebu-profile.spec.in