* filewrite.nsi, getparameters.nsi, instance-check.nsi,
mingw-path.nsi, sm-dummy.nsi, strslash.nsi, strstr.nsi,
options.nsi: Added the shared between the 2 installer scripts.
* msys-path.nsi: Fixed the last LF bug.
* rtems-autotools.nsi, rtems-tools.nsi: Fixed the instance check,
added a start menu, remove pages from target installers.
* rtems.ini: Fixed the URL links. Added support link.
* rtems_logo.bmp: Trimmed a little more to get a better image.
* ba-wrap.sh: Stop on a error.
* build-exes.sh: Use the option parameter variables. Change the
order the section appear in the installer.
