Add qmake generated files to .gitignore.
Add qmake generated files to .gitignore.

Add source files generated by qmake for automatic static plugin
imports to .gitignore.

Change-Id: I9b80e83beb65041f7c6f79c0b2ad8c04f05343eb
Reviewed-by: Oswald Buddenhagen <6a8868beda3e139b5ac22b2534a23d3e6ba81819@digia.com>

kobolabs/qtquick1,kobolabs/qtquick1,kobolabs/qtquick1,kobolabs/qtquick1,kobolabs/qtquick1,kobolabs/qtquick1