A few changes related to use of texinfo macros....

In the "Help" section, the forced line break causes the Info output to be 
garbled and I can't see any reason for it -- the Info, HTML and PDF outputs all 
look fine to me without it.

In that same section, some of the sample output lines have been wrapped to fit 
in the @smallbook format.  The indentation for the wrapped lines is inconsistent 
and makes the text hard to read.  I changed the indentation to look nice, which 
doesn't match the real unwrapped output from GDB but at least is easier to read.

The other changes should be obvious.

2007-03-23  Bob Wilson  <bob.wilson@acm.org>
	
	* gdb.texinfo (Help): Fix formatting of examples.
	(Variables): Use @ifnotinfo instead of @iftex.
	(Non-debug DLL symbols): Use @ref instead of @pxref.
	(Sparclet File): Use @samp instead of quotes.