make/mapfiles/libnio/mapfile-linux

rev 16220 : 8168628: (fc) SIGBUS when extending file size to map it
Summary: Synchronize file extension and subsequent map0(); on Linux use fallocate64() instead of ftruncate64().
Reviewed-by: rehn, simonis, alanb

*** 58,67 ****
--- 58,68 ----
                  Java_sun_nio_ch_FileChannelImpl_initIDs;
                  Java_sun_nio_ch_FileChannelImpl_map0;
                  Java_sun_nio_ch_FileChannelImpl_position0;
                  Java_sun_nio_ch_FileChannelImpl_transferTo0;
                  Java_sun_nio_ch_FileChannelImpl_unmap0;
+                 Java_sun_nio_ch_FileDispatcherImpl_allocate0;
                  Java_sun_nio_ch_FileDispatcherImpl_close0;
                  Java_sun_nio_ch_FileDispatcherImpl_closeIntFD;
                  Java_sun_nio_ch_FileDispatcherImpl_force0;
                  Java_sun_nio_ch_FileDispatcherImpl_init;
                  Java_sun_nio_ch_FileDispatcherImpl_lock0;