THRIFT-199. perl: Let "make distclean" work when we are not using Perl

When configure is run with --without-perl, lib/perl/Makefile.am cannot
generate Makefile-perl.mk.  However, "make distclean" still runs, so
the clean-local target fails.  This version just silently does nothing
when Perl is not being used.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@743190 13f79535-47bb-0310-9956-ffa450edef68
1 file changed