Re-added the needed espaces.

Revert "whitespace: removed extra escape"

This reverts commit a2ecb8f8.

bin/getwhitespace.sh

@@ -4,7 +4,7 @@ echo "/* File generated on `date`
 by getwhitespace <UnicodeData.txt */
 
 #define SPACECASE8							\\
-       case ' ':case '\\t':case '\\r':case '\\n':case '\\v':case '\\f':	\\
+       case ' ':case '\\\\t':case '\\\\r':case '\\\\n':case '\\\\v':case '\\\\f':	\\
        case 0x85:case 0xa0:
 "