macosx/framework: Correctly set the Input and Output files of the script target to save uneeded script execution.

cmake: Removed VERBATIM flag, allows OS to perform command substitution -- resolved unexpected directory creations.

This seems to fix the deadlock on Linux.

frontrow plugin: fix headers install script, add a README with simple building and installation instructions

Qt4 - Switch the HelpDialog to a QVLCFrame, save size/pos for it. Saze size/pos for updateDialog ( noone care about size...). Switch about to a QVLCDialog to ensure better view. Ensure to destroy the QVLCFrame on quit.
Should close #1374.

Qt4 - add a file to document a few things, especially the difference between QVLCDialog and QVLCFrame.

Qt4 - Fix mediaInfoPanel in most (all?) of the situations and during resizing. Less funny but more solid, clean and aligned.

Qt4 - Remove the qt-pl-showflags from preferences and put it in QSettings,because there is no way a normal being get it right.