ASCII character value constants

Defines
#define	SVN_CTYPE_ASCII_MINUS   45 /**< ASCII value of '-' */
	ASCII value of '-'.
#define	SVN_CTYPE_ASCII_DOT   46 /**< ASCII value of '.' */
	ASCII value of '.'.
#define	SVN_CTYPE_ASCII_COLON   58 /**< ASCII value of ':' */
	ASCII value of ':'.
#define	SVN_CTYPE_ASCII_UNDERSCORE   95 /**< ASCII value of '_' */
	ASCII value of '_'.
#define	SVN_CTYPE_ASCII_TAB   9 /**< ASCII value of a tab */
	ASCII value of a tab.
#define	SVN_CTYPE_ASCII_LINEFEED   10 /**< ASCII value of a line feed */
	ASCII value of a line feed.
#define	SVN_CTYPE_ASCII_CARRIAGERETURN   13
	ASCII value of a carriage return.
#define	SVN_CTYPE_ASCII_DELETE   127
	ASCII value of a delete character.

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