* gnat-style.texi (header): Add @dircategory, @direntry.

	* gnat-style.texi (header): Add @dircategory, @direntry.
	(title page): Remove date.
	(general) Add @./@: where approriate, and two spaces after the
	full stop at the end of a sentence.  Use @samp markup when
	referring concrete lexical entities (keywords, attribute names
	etc.), and @syntax for ARM grammar elements. Use @r for English
	text in comments.  Use @emph for emphasis.  Change "if-statements"
	etc. to "if statements" (without @samp). Break long lines.  Make
	casing of section names consistent.
	(Identifiers): Use @samp markup for variable names.
	(Comments): Use @samp markup for comment characters. Line-end
	comments may follow any Ada code, not just statements.  Fix
	misspelling of "Integer" as "integer".
	(Loop statements): Do not use variable name "I", use "J".
	(Subprogram Declarations): Document alignment.
	(Subprogram Bodies, Block statements): Document empty line before
	"begin".

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@48285 138bc75d-0d04-0410-961f-82ee72b054a4