Fix relocations warning when compile python module

After enable python support in newt, bitbake complains warning:

WARNING: QA Issue: ELF binary '/mnt/sda10/poky-all-platform/build/tmp/work/i586-poky-linux/libnewt/0.52.14-r2/packages-split/libnewt-python/usr/lib/python2.7/site-packages/_snackmodule.so' has relocations in .text

Add flag -fPIC to compile _snackmodule.so to fix the warning.

Signed-off-by: Kang Kai <kai.kang@windriver.com>

Upstream-Status: Pending

---
--- newt-0.52.14/Makefile.in	2012-12-04 17:27:27.578915801 +0800
+++ newt-0.52.14/Makefile.in.new	2012-12-04 17:28:43.274918472 +0800
@@ -84,7 +84,7 @@
 			PIFLAGS=`$$ver-config --includes`; \
 			PLDFLAGS=`$$ver-config --ldflags`; \
 			PLFLAGS=`$$ver-config --libs`; \
-	        $(CC) $(CPPFLAGS) $$PIFLAGS $$PCFLAGS -c -o $$ver/snackmodule.o snackmodule.c ;\
+	        $(CC) $(SHCFLAGS) $(CPPFLAGS) $$PIFLAGS $$PCFLAGS -c -o $$ver/snackmodule.o snackmodule.c ;\
 	        $(CC) --shared $$PLDFLAGS $$PLFLAGS $(LDFLAGS) -o $$ver/_snackmodule.so $$ver/snackmodule.o -L.  -lnewt $(LIBS);\
 	done || :
 	touch $@