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)

This patch is courtesy of OpenEmbedded, by Khem Raj <raj.khem@gmail.com>

http://cgit.openembedded.org/cgit.cgi/openembedded/commit/?id=b85b779688f0abc389e3c25d06b54de8b86385c1

Index: ltrace-0.5.3/Makefile.in

===================================================================

--- ltrace-0.5.3.orig/Makefile.in	2009-10-23 22:06:08.130304691 -0700

+++ ltrace-0.5.3/Makefile.in	2009-10-23 22:06:53.160369614 -0700

@@ -39,6 +39,8 @@ ltrace:		main.o libltrace.a

 libltrace.a: 	sysdeps/sysdep.o $(OBJ)

 		$(AR) rcv $@ $^

+$(OBJ):		sysdeps/sysdep.o

+

 sysdeps/sysdep.o: dummy

 		$(MAKE) -C sysdeps/$(OS)