soft-fp: Update soft-fp from glibc

This patch is updating all soft-fp from glibc, most changes are
copyright years update, and changes other than years update are

	* soft-fp/extenddftf2.c: Use "_FP_W_TYPE_SIZE < 64" to check if
	4_FP_W_TYPEs are used for IEEE quad precision.
	* soft-fp/extendhftf2.c: Likewise.
	* soft-fp/extendsftf2.c: Likewise.
	* soft-fp/extendxftf2.c: Likewise.
	* soft-fp/trunctfdf2.c: Likewise.
	* soft-fp/trunctfhf2.c: Likewise.
	* soft-fp/trunctfsf2.c: Likewise.
	* soft-fp/trunctfxf2.c: Likewise.
	* config/rs6000/ibm-ldouble.c: Likewise.

From-SVN: r271327
diff --git a/libgcc/soft-fp/fixtfdi.c b/libgcc/soft-fp/fixtfdi.c
index 7ea934d..44f48f5 100644
--- a/libgcc/soft-fp/fixtfdi.c
+++ b/libgcc/soft-fp/fixtfdi.c
@@ -1,6 +1,6 @@
 /* Software floating-point emulation.
    Convert a to 64bit signed integer
-   Copyright (C) 1997-2018 Free Software Foundation, Inc.
+   Copyright (C) 1997-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Richard Henderson (rth@cygnus.com) and
 		  Jakub Jelinek (jj@ultra.linux.cz).