Merge #11620: [build] .gitignore: add background.tiff

4a110a0 [build] .gitignore: add background.tiff (Sjors Provoost)

Pull request description:

  On OSX, running `make deploy` results in three files that were not covered by `.gitignore`:

  	background.tiff
  	background.tiff.png
  	[email protected]

Tree-SHA512: cee7a6ebbc50f28bf588121902f6026ec08cf6516d9e56734dfc1b2d3f238e2db5bf87411f6a74b8bd06569f792789ac9f9046e6183f63fd675b953f24b060fc

Author: MarcoFalke

.gitignore

@@ -76,6 +76,7 @@ src/qt/test/moc*.cpp
 Makefile
 bitcoin-qt
 Bitcoin-Qt.app
+background.tiff*
 
 # Unit-tests
 Makefile.test