Update .gitignore (#375)

Added and updated gendarme related files to ignore, as well as backup
files and patch artifacts.

.gitignore

@@ -5,11 +5,16 @@ JavaDeveloper-2013005_dp__11m4609.pkg
 LocalJDK
 TestResult.xml
 TestResult-*.xml
-xa-gendarme.html
+lib/gendarme-*
+gendarme.html
+gendarme.xml
 packages
 .vs/
 .nuget/
 *.userprefs
 *.user
 Resource.designer.cs
-*.binlog
+*.binlog
+*.rej
+*.orig
+*~