Don't always add LICENSE.md to dist.tarball

src/include/build.sh

         done
         echo "s|__MKIT_PROJ_NAME__|$(ini 1value project:name | _qfs)|g;"
         echo "s|__MKIT_PROJ_CODENAME__|$(ini 1value project:codename | _qfs)|g;"
+        echo "s|__MKIT_PROJ_LICENSE__|$(ini 1value project:license | _qfs)|g;"
         echo "s|__MKIT_PROJ_PKGNAME__|$(ini 1value project:pkgname | _qfs)|g;"
         echo "s|__MKIT_PROJ_TAGLINE__|$(ini 1value project:tagline | _qfs)|g;"
         echo "s|__MKIT_PROJ_MAINTAINER__|$(ini 1value project:maintainer | _qfs)|g;"

src/newstub

             test -n "$RelDst"       && echo "    reldst      = $RelDst"
             echo ""
             echo "[dist]"
-            echo "    tarball = LICENSE.md"
+            $MkLicense  && echo "    tarball = LICENSE.md"
             $MkMakefile && echo "    tarball = Makefile"
             $MkReadme   && echo "    tarball = README.md"
             echo "    tarball = mkit.ini"
     esac done
     PackageName="$1"
     test -n "$PackageName" || usage
-    if test -n "$License"; then
+    if $MkLicense; then
         known_licenses | grep -qxF "$License" \
          || die "unknown license (use -L to get list): $License"
         MkLicense=true