Win32: Always try to install Date-Manip and as fallback DateManip.

It seems that the PPM repositories for ActivePerl v5.6 and v5.8 have been
changed so that DateManip cannot be found anymore.  Keep it for second try
nonetheless.

BP

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@17504 57a11ea4-9604-0410-9ed3-97b8803252fd

packaging/win32/install-fq-mods.bat

@@ -38,12 +38,11 @@ goto error
 
 echo * Install DateManip
 echo.
-if %_perlversion% == 5.10 (
-  perl -x -S ppm install Date-Manip
-) else (
+perl -x -S ppm install Date-Manip
+if %errorlevel% neq 0 (
   perl -x -S ppm install DateManip
+  if %errorlevel% neq 0 goto error
 )
-if %errorlevel% neq 0 goto error
 
 echo.
 echo * Install Crypt-SSLeay