[doc, committed] reclassify -fuse-ld= as a linker option

[Sandra Loosemore <sandra at codesourcery dot com>]

I noticed that -fuse-ld= was incorrectly classified as an optimization 
option in the manual.  It's a driver-only option so it seems better to 
list it with the linker options.  I've checked in this patch to move it 
(there's no change to the actual content of the documentation, just its 
location).

-Sandra


2015-01-14  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* doc/invoke.texi (Option Summary): Reclassify -fuse-ld as a linker
	option.
	(Optimization Options): Move -fuse-ld documentation to...
	(Link Options): ...here.

Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi	(revision 219497)
+++ gcc/doc/invoke.texi	(working copy)
@@ -446,7 +446,7 @@ Objective-C and Objective-C++ Dialects}.
 -funit-at-a-time -funroll-all-loops -funroll-loops @gol
 -funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops @gol
 -fipa-ra -fvariable-expansion-in-unroller -fvect-cost-model -fvpt @gol
--fweb -fwhole-program -fwpa -fuse-ld=@var{linker} -fuse-linker-plugin @gol
+-fweb -fwhole-program -fwpa -fuse-linker-plugin @gol
 --param @var{name}=@var{value}
 -O  -O0  -O1  -O2  -O3  -Os -Ofast -Og}
 
@@ -472,7 +472,7 @@ Objective-C and Objective-C++ Dialects}.
 
 @item Linker Options
 @xref{Link Options,,Options for Linking}.
-@gccoptlist{@var{object-file-name}  -l@var{library} @gol
+@gccoptlist{@var{object-file-name}  -fuse-ld=@var{linker} -l@var{library} @gol
 -nostartfiles  -nodefaultlibs  -nostdlib -pie -rdynamic @gol
 -s  -static -static-libgcc -static-libstdc++ @gol
 -static-libasan -static-libtsan -static-liblsan -static-libubsan @gol
@@ -9324,14 +9324,6 @@ the comparison operation before register
 
 Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
 
-@item -fuse-ld=bfd
-@opindex fuse-ld=bfd
-Use the @command{bfd} linker instead of the default linker.
-
-@item -fuse-ld=gold
-@opindex fuse-ld=gold
-Use the @command{gold} linker instead of the default linker.
-
 @item -fcprop-registers
 @opindex fcprop-registers
 After register allocation and post-register allocation instruction splitting,
@@ -10875,6 +10867,14 @@ If any of these options is used, then th
 object file names should not be used as arguments.  @xref{Overall
 Options}.
 
+@item -fuse-ld=bfd
+@opindex fuse-ld=bfd
+Use the @command{bfd} linker instead of the default linker.
+
+@item -fuse-ld=gold
+@opindex fuse-ld=gold
+Use the @command{gold} linker instead of the default linker.
+
 @cindex Libraries
 @item -l@var{library}
 @itemx -l @var{library}