Show details during win32 installation

When doing a win32 installation the details are hidden and only shown
very briefly. In some cases when doing an Exec on some of the OSSEC
command line tools it will spawn a cmd.exe that only appears for a
second. Some of the details those processes do are logged in the
ossec.log but it would be nice if they were also displayed in the details
window and those details can be reviewed.

Changed all Exec's to use ExecToLog so their details show up in the
installer details section.

Configured the details to be displayed by default and to not skip
past the details page automatically when the installation is completed.

This also has the added benefit of now popping up cmd.exe windows when
an installation takes place.
Merge pull request #130 from awiddersheim/fix_win32_installer_details

Show details during win32 installation