Implement RtlTrimLeftString(), RtlTrimRightString() and RtlTrimString() routines

sdk/xtdk/rtlfuncs.h

@@ -131,6 +131,18 @@ RtlTokenizeWideString(IN PWCHAR String,
                       IN CONST PWCHAR Delimiter,
                       IN OUT PWCHAR *SavePtr);
 
+XTCDECL
+PCHAR
+RtlTrimLeftString(IN CONST PCHAR String);
+
+XTCDECL
+PCHAR
+RtlTrimRightString(IN CONST PCHAR String);
+
+XTCDECL
+PCHAR
+RtlTrimString(IN CONST PCHAR String);
+
 XTCDECL
 SIZE_T
 RtlWideStringLength(IN CONST PWCHAR String,