Fixed perl regression problem due to Version name - Fixes Bug #51218

Fixed perl regression problem due to Version name - Fixes Bug #51218

The regression failed in some perl tests due to an incompatible
pspp version number. I changed to a version number that includes
a "-". The problem is described in acinclude.m4. See

  The PSPP autobuilder appends a build number to the PSPP version number,
  e.g. "0.7.2-build40".  But Perl won't parse version numbers that contain
  anything other than digits and periods, so "-build" causes an error.  So we
  define $(VERSION_FOR_PERL) that drops everything from the hyphen onward.
  VERSION_FOR_PERL=`echo "$VERSION" | sed 's/-.*//'`
  AC_SUBST([VERSION_FOR_PERL])

The version name was 0.10.5pre1 without a "-". Therefore the version name
for perl results in a problem.