[PATCH] Update and clean up RISC-V gas documentation.

[Ulrich Weigand]

Jim Wilson wrote:

> 	(RISC-V Directives): New node.

This now causes build failures on my Cell daily build system (GNU texinfo 4.8):

c-riscv.texi:53: Node `RISC-V-Directives' requires a sectioning command (e.g., @unnumberedsubsubsec).
c-riscv.texi:53: `RISC-V-Directives' has no Up field (perhaps incorrect sectioning?).
c-riscv.texi:22: Next field of node `RISC-V-Options' not pointed to (perhaps incorrect sectioning?).
c-riscv.texi:53: This node (RISC-V-Directives) has the bad Prev.

Bye,
Ulrich

-- 
  Dr. Ulrich Weigand
  GNU/Linux compilers and toolchain
  Ulrich.Weigand@de.ibm.com