MSSP is accessible via vbs by simply changing the object to be used (both
SAPI5 and MSSP use the ISpVoice COM interface). Add command line parameter to
sapi_voice.vbs to switch the COM object used, and add the necessary
implementation of the SAPI class to Rockbox Utility.
Important: you will need to install the Speech Runtime separately and install
the version matching the bitsize of Rockbox Utility. I.e. you will need to
install the x86 version even on a x64 machine (unless you build a 64bit binary
of Rockbox Utility).
Change-Id: If760cd69c556c17a2ae539965d0941d16fdc10e1
