windeplopyqt: Run qmlimportscanner from current directory.

Otherwise, passing relative paths to the -qmldir option does not work.

Change-Id: I4cff5a0e1ef7a2bcfa82558bb1898361f77f3014
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
windeployqt: Ignore empty paths returned by qmlimportscanner.

Change-Id: If8d3964f82ff1ca92aa9d1df05bd4573261401fb
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
windeployqt: Change command line option for QtHelp module to qthelp.

Change-Id: Ie49a0139cde27fb384fce6320240c9eec3a1372f
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>