Add filters to the P1 xform

.gitattributes

@@ -56,6 +56,7 @@ tools/generate_io_baseline.sh -text
 tools/getlibs.sh -text
 tools/getsyms.sh -text
 tools/p1xform.doxform.sh -text
+tools/p1xform.filter.libc.txt -text
 tools/p1xform.filter.sh -text
 tools/p1xform.genspri.sh -text
 tools/p1xform.pbed.sh -text

tools/p1xform.filter.libc.txt

+.init_proc
+__do_global_dtors_aux
+__pthread_initialize_minimal
+__libc_csu_init
+__libc_csu_irel
+__internal_atexit
+_IO_default_finish
+_IO_default_doallocate
+_IO_default_xsputn
+malloc_consolidate
+ptmalloc_init
+_dl_addr_inside_object
+_dl_addr
+__gettext_free_exp
+new_exp
+__default_morecore
+_dl_aux_init
+_dl_non_dynamic_init
+_nl_explode_name
+__handle_registered_modifier_wc
+_IO_wfile_seekoff
+__gconv_get_builtin_trans
+__gconv_transform_internal_ucs2
+_IO_new_file_write
+_IO_file_stat
+_IO_file_doallocate
+isatty
+fini
+__deregister_frame_info_bases
+__do_global_ctors_aux