force C function definitions

vlib/builtin/cfns.v

@@ -29,6 +29,66 @@ fn C.realpath(byteptr, byteptr) &char
 
 
 
+
+fn C.chmod(byteptr, int)
+fn C.printf(byteptr, ...byteptr)
+fn C.fputs(byteptr)
+fn C.fflush(byteptr) int
+// TODO define args in these functions
+fn C.fseek() int
+fn C.fopen() int
+fn C.fwrite() int
+fn C.fclose() int
+fn C.pclose() int
+fn C.system() int
+fn C.setenv() int
+fn C.unsetenv() int
+fn C.access() int
+fn C.remove() int
+fn C.rmdir() int
+fn C.chdir() int
+fn C.fread() int
+fn C.rewind() int
+fn C.stat() int
+fn C.rename() int
+fn C.fgets() int
+fn C.memset() int
+fn C.sigemptyset() int
+fn C.getcwd() int
+fn C.signal() int
+fn C.mktime() int
+fn C.gettimeofday() int
+fn C.sleep() int
+fn C.usleep() int
+fn C.opendir() voidptr
+fn C.closedir() int
+fn C.mkdir() int
+fn C.srand() int
+fn C.atof() int
+fn C.tolower() int
+fn C.toupper() int
+fn C.getchar() int
+fn C.strerror() *C.char
+fn C.snprintf() int
+fn C.fprintf(byteptr, ...byteptr)
+
+fn C.WIFEXITED() bool
+fn C.WEXITSTATUS() int
+fn C.WIFSIGNALED() bool
+fn C.WTERMSIG() int
+fn C.DEFAULT_LE() bool
+fn C.DEFAULT_EQ() bool
+fn C.DEFAULT_GT() bool
+fn C.DEFAULT_EQUAL() bool
+fn C.DEFAULT_NOT_EQUAL() bool
+fn C.DEFAULT_LT() bool
+fn C.DEFAULT_GE() bool
+fn C.isatty() int
+
+
+
+
+
 // Windows
 fn C._setmode(int, int)
 fn C._fileno(int) int
@@ -42,3 +102,4 @@ fn C.ReadFile(hFile voidptr, lpBuffer voidptr, nNumberOfBytesToRead u32, lpNumbe
 fn C.GetFileAttributesW(lpFileName byteptr) u32
 fn C.RegQueryValueExW(hKey voidptr, lpValueName &u16, lpReserved &u32, lpType &u32, lpData byteptr, lpcbData &u32) int
 fn C.RegOpenKeyExW(hKey voidptr, lpSubKey &u16, ulOptions u32, samDesired u32, phkResult voidptr) int
+fn C.RemoveDirectory() int