Mistakes in functions of work with files and with system calls KolibriOS are corrected.

New functions for work with system calls KolibriOS are added. Functions for format output 
are added: printf (), fprintf (), sprintf (), snprintf (), vsnprintf (). For material 
numbers it is meanwhile supported only format output the (%f), and exponential output a (%e)
is not realized yet. 
Functions for format output correctly work only in GCC because TinyC incorrectly works with
the functions containing variable number of arguments.

git-svn-id: svn://kolibrios.org@647 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/ktcc/trunk/libc/string/strrchr.c

@@ -0,0 +1,14 @@
+char* strrchr(const char* s,int c)
+{
+	char* res;
+	res=(char*)0;
+	while (1)
+	{
+		if (*s==(char)c)
+			res=(char*)s;
+		if (*s=='\0')
+			break;
+		s++;
+	}
+	return res;
+}