tile: use soft-fp for fma() and fmaf()

The sfp-machine.h is based on the gcc version, but extended with
required new macros by comparison with other architectures and by
investigating the hardware support for FP on tile.
tile: update libm-test-ulps from scratch
tile: use _dl_static_init to set GLRO(gl_pagesize)

A recently-added test (dlfcn/tststatic5) pointed out that tile was not
properly initializing the variable pagesize in certain cases.  This
change just copies the existing code from MIPS.
Full from-scratch rebuild of sparc ULPs.

	* sysdeps/sparc/fpu/libm-test-ulps: Regenerate from scratch.