Installer check setting value, if install-location is auto.

Installer check setting value, if install-location is auto.

[Issue#]   P130919-00555
[Problem]  WebApp install to internal storage
           even if installation storage set to external on setting menu.
[Cause]    Installer doesn't check setting value about installation storage.
[Solution] Installer will check setting value about install-location.
[Description]
           Two values to determine the location of the installation
           1. install location element value in config.xml, internal-only|auto|preper-external
           2. install location setting menu in target, internal|SD card
           Installed on SD card conditions
           1. config type sets preper_external & inserted MMC
           2. config type sets auto & target type sets SD card
           3. config type sets auto & target type sets internal & out of internal memory

Change-Id: I7dfb193a72e3e765b9d908574246f2212a5e6c4e