Doc: minor changes to index.qdoc

index.qdoc of QtSerialPort

Task-number: QTBUG-32173
Change-Id: I0cc4a3fd0b469d344da952dfd1042e431e043a4b
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Review QtSerialPort documentation

Adapted to review comments

Task-number: QTBUG-32173

Change-Id: I41839934c3aea9ccf3ef596e2a869b479f3c75ba
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Update the git-archive export options

The .gitattributes, .gitignore, .commit-template files do not need to be
present in packaged sources, as they are for people using the Git
repository.  People who download tarballs usually don't reimport into
Git -- they should just download the actual repositories.

Meanwhile, the .tag file is quite useful. Instead of making Git extract
to the useless SHA-1 of the "$Id$\n" string, ask git-archive to store
the SHA-1 of the commit being packaged.

Change-Id: I2473014da9053790099711d435317601085b8414
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I6f4ee883b4c2e6e441c18d8a19839a586e1f0552