Litecoin: Fix Qt build by setting -fPIC

Thanks to Viacoin for this patch.

configure.ac

@@ -424,8 +424,8 @@ if test x$use_hardening != xno; then
 
   if test x$TARGET_OS != xwindows; then
     # All windows code is PIC, forcing it on just adds useless compile warnings
-    AX_CHECK_COMPILE_FLAG([-fPIE],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fPIE"])
+    AX_CHECK_COMPILE_FLAG([-fPIC],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fPIC"])
-    AX_CHECK_LINK_FLAG([[-pie]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -pie"])
+    AX_CHECK_LINK_FLAG([[-pic]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -pic"])
   fi
 
   case $host in