15254 %ymm registers not restored after signal handler
15367 x86 getfpregs() summons corrupting %xmm ghosts
15333 want x86 /proc xregs support (libc_db, libproc, mdb, etc.)
15336 want libc functions for extended ucontext_t
15334 want ps_lwphandle-specific reg routines
15328 FPU_CW_INIT mistreats reserved bit
15335 i86pc fpu_subr.c isn't really platform-specific
15332 setcontext(2) isn't actually noreturn
15331 need <sys/stdalign.h>
Change-Id: I7060aa86042dfb989f77fc3323c065ea2eafa9ad
Conflicts:
    usr/src/uts/common/fs/proc/prcontrol.c
    usr/src/uts/intel/os/archdep.c
    usr/src/uts/intel/sys/ucontext.h
    usr/src/uts/intel/syscall/getcontext.c

@@ -412,10 +412,11 @@
 usr/src/lib/libsmbfs/smb/spnegoparse.[ch]
 usr/src/test/crypto-tests/tests/digest/data/*.rsp
 usr/src/test/crypto-tests/tests/digest/data/README
 usr/src/test/libc-tests/tests/err/data/*
 usr/src/test/libmlrpc-tests/tests/netrlogon/krb5_pac_tests/krb5_pac.bin
+usr/src/test/os-tests/tests/xsave/data/*
 usr/src/test/util-tests/tests/dis/*/*.out
 usr/src/test/util-tests/tests/libsff/*.out
 usr/src/test/util-tests/tests/grep_xpg4/files/gout*
 usr/src/test/util-tests/tests/grep_xpg4/files/test*
 usr/src/test/util-tests/tests/head/*.in