Added --asif option to launchers

It allows any launcher behave as any other one from the list.
So we can have only one binary.
But the gui mode should still be corrected if needed.
8 jobs for master in 3 minutes and 52 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #13668
linux
build:linux

00:01:22

passed #13667
mac_old
build:mac

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passed #13666
win32
build:win32

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passed #13665
winxp
build:winxp

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  Dist
passed #13672
linux
dist:linux

00:00:16

passed #13671
mac_old
dist:mac

00:01:38

passed #13670
win32
dist:win32

00:00:14

passed #13669
winxp
dist:winxp

00:00:13