complibs/ppl: fix 0.11-0.11.2 to compile with --disable-shared

PPL 0.11 (through 0.11.2) had a small bug where it still tried to build
and test its Java interface even when shared libraries are disabled.
Since that's exactly what ct-ng does, it explodes.

This is the patch from the PPL authors (see final link below).

More information can be found in these messages/threads:

Anthony's initial report and analysis with Yann:
http://www.cygwin.com/ml/crossgcc/2011-05/msg00046.html

Ron Flory hit the same problem:
http://www.cygwin.com/ml/crossgcc/2011-05/msg00054.html

Anthony's report to the ppl-devel list:
http://www.cs.unipr.it/pipermail/ppl-devel/2011-May/017450.html

Roberto's reply with a link to the fix in the PPL git repo:
http://www.cs.unipr.it/pipermail/ppl-devel/2011-May/017455.html

Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
(transplanted from 139b85d70b623e51f7585e7c64ecb8c6a6cf4567)

diff -dur libelf-0.8.10.orig/configure libelf-0.8.10/configure

--- libelf-0.8.10.orig/configure	2007-09-07 14:08:06.000000000 +0200

+++ libelf-0.8.10/configure	2008-10-23 22:43:19.000000000 +0200

@@ -1595,7 +1595,7 @@

   echo $ac_n "(cached) $ac_c" 1>&6

 else

   if test "$cross_compiling" = yes; then

-  ac_cv_sizeof_long_long=0

+  ac_cv_sizeof_long_long=8

 else

   cat > conftest.$ac_ext <<EOF

 #line 1602 "configure"

diff -dur libelf-0.8.10.orig/configure.in libelf-0.8.10/configure.in

--- libelf-0.8.10.orig/configure.in	2007-09-07 14:07:59.000000000 +0200

+++ libelf-0.8.10/configure.in	2008-10-23 22:43:10.000000000 +0200

@@ -90,7 +90,7 @@

 AC_CHECK_SIZEOF(short,2)

 AC_CHECK_SIZEOF(int,4)

 AC_CHECK_SIZEOF(long,4)

-AC_CHECK_SIZEOF(long long,0)

+AC_CHECK_SIZEOF(long long,8)

 # Windows port

 AC_CHECK_SIZEOF(__int64, 0)