Improve .gitignore
Improve .gitignore

Change-Id: I4e9fd33f199b90a4b7c8cf8b9fcc6d18c532842d
Reviewed-by: Debao Zhang <bead61852e622842c76a351e6806704886c70780@gmail.com>
Reviewed-by: Jonas Rabbe <6e9178b26dba0cd114a9aed0874c56cbbaba6438@gmail.com>

jfaust/qtmultimedia,nezticle/qtmultimedia,mer-qt/qtmultimedia,webOS-ports/qtmultimedia,webOS-ports/qtmultimedia,sergiusens/qtmultimedia,nezticle/qtmultimedia,jfaust/qtmultimedia,webOS-ports/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,sergiusens/qtmultimedia,mer-qt/qtmultimedia,nezticle/qtmultimedia,nezticle/qtmultimedia,nezticle/qtmultimedia,sergiusens/qtmultimedia,jfaust/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,sergiusens/qtmultimedia,jfaust/qtmultimedia,sergiusens/qtmultimedia,mer-qt/qtmultimedia,jfaust/qtmultimedia