pginstaller - pginst: * Make SERVERDIR a public property * Validate

Log Message:
-----------
* Make SERVERDIR a public property
* Validate service account when entered (instead of throwing error when failed to assign to the service)
* Automatically add ".\" to service account name if no domain entered
* Set permissions on installed files (only when doing service install, since that's the only case we know the account
name)
* Change function declarations in the MSI API - the old ones broke the stack when called, which just didn't show up for
somereasons... 
* Change libmsi.a to be built from a .def included in the distribution instead of automatically on the whole DLL
(requiredfor the @ syntax on function imports) 
* Add feature to DATADIR, so it's actually created during installation

Modified Files:
--------------
    pginst/ca:
        Makefile (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/Makefile.diff?r1=1.1&r2=1.2)
        pginstca.c (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c.diff?r1=1.2&r2=1.3)
    pginst/wxs:
        dialogs.wxs (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/dialogs.wxs.diff?r1=1.5&r2=1.6)
        pginst.wxs (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.10&r2=1.11)

Added Files:
-----------
    pginst/ca:
        msi.def (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/msi.def?rev=1.1&content-type=text/x-cvsweb-markup)
    pginst/inst:
        README (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/inst/README?rev=1.1&content-type=text/x-cvsweb-markup)
        pgperm.bat (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/inst/pgperm.bat?rev=1.1&content-type=text/x-cvsweb-markup)