Tweak .gitignore to ignore gcov files; add a convenience script (lcov.sh) to run lcov & package results

.gitignore

@@ -21,6 +21,9 @@ src/test-harness/twtest
 **/*.dll
 **/*.exe
 **/*~
+**/*#
 **/*.bak
 **/.DS_Store
+**/*.gcno
+**/*.gcda
 releases/

lcov.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+if [ -d ./lcov ]; then
+  rm -Rf ./lcov
+fi
+
+if [ -e ./lcov.dat ]; then
+  rm ./lcov.dat
+fi
+
+if [ -e ./lcov.tgz ]; then
+  rm ./lcov.tgz
+fi
+
+lcov --capture --directory src --output-file ./lcov.dat
+genhtml ./lcov.dat --output-directory lcov
+tar -zcvf lcov.tgz lcov
+