Install the drivers with short file names (#76)

* Install the drivers with short file names

This avoids the need to post-process the MSI file to work around
http://wixtoolset.org/issues/1422/ (installing ODBC drivers with long
file names fails).

For compatibility with existing configurations the short-named DLLs are
also installed with their original long names.

* Remove modify_msi.vbs

installer/buildInstallers.ps1

@@ -281,12 +281,6 @@ function buildInstaller([string]$CPUTYPE)
 			throw "Failed to build installer database"
 		}
 
-		Write-Host ".`nModifying psqlODBC installer database..."
-		cscript modify_msi.vbs $INSTBASE\psqlodbc_$CPUTYPE.msi
-		if ($LASTEXITCODE -ne 0) {
-			throw "Failed to modify installer database"
-		}
-
 		Write-Host ".`nDone!`n"
 	}
 	catch [Exception] {

installer/psqlodbcm_cpu.wxs

@@ -52,7 +52,8 @@
     <Directory Id="INSTALLFOLDER" />
 
     <!-- PostgreSQL -->
-    <File Name="psqlodbc30a.dll" Source="$(BINBASE)\$(ANSIFOLDER)\psqlodbc30a.dll">
+    <File Name="podbc30a.dll" Source="$(BINBASE)\$(ANSIFOLDER)\psqlodbc30a.dll">
+      <CopyFile DestinationName="psqlodbc30a.dll" />
       <ODBCDriver Id="Psqlodbc_9.0_Driver_ANSI" Name="PostgreSQL ANSI($(Platform))">
         <Property Id="CPTimeout" Value="60" />
       </ODBCDriver>
@@ -65,7 +66,8 @@
     <File Name="psqlodbc30a.pdb" Source="$(BINBASE)\$(ANSIFOLDER)\psqlodbc30a.pdb" />
     <File Name="pgenlista.pdb" Source="$(BINBASE)\$(ANSIFOLDER)\pgenlista.pdb" />
 <?endif ?>
-    <File Name="psqlodbc35w.dll" Source="$(BINBASE)\$(UNICODEFOLDER)\psqlodbc35w.dll">
+    <File Name="podbc35w.dll" Source="$(BINBASE)\$(UNICODEFOLDER)\psqlodbc35w.dll">
+      <CopyFile DestinationName="psqlodbc35w.dll" />
       <ODBCDriver Id="Psqlodbc_9.0_Driver" Name="PostgreSQL Unicode($(Platform))">
         <Property Id="CPTimeout" Value="60" />
       </ODBCDriver>