[LWIP] Update LwIP 2.0.2 opts header file for rtt.

[log trace] add log_file flush function

[BSP] stm32f10x add watchdog driver

[DFS] To make sure the "console" device exist or not when initialize
console device.

[lwIP] Update ethernetif.c

[DeviceDrivers] Add audio driver.

Fix a bug in function sdio_unregister_driver

[net] Modbus update KConfig.

static void copydir(const char * src, const char * dst)

[SQLite] fix fdatasync bug

[DFS] update elm fatfs to 0.12b version.

[DeviceDrivers] pin: add irq APIs.

修复I2C读写函数，I2C传输失败时返回成功的问题

[DeviceDriver] fix the dataqueue issues.

Update ethernetif.c

if device->eth_rx is NULL ,rx thread will hard fault...

uart configure shall not been performed if uart is not open.

This reverts commit cd3b0cfff5.

Improve serial DMA rx mode. #628

committed by FH.

patched by FH.

Add MMC/SD change support, which patched by FH.

abort routine will cause sig_xxx() reference.

function `rt_pin_write` is invoked by  function `can_bus_hook`, and it should to be initialized by gpio.c.
but gpio.c was not added in SConscript

fix reset serial receive interrupt flag when close serial

This bug causes buffer overrun.

LWIP_NAT_TMR_INTERVAL_SEC defined in ipv4_nat.h is in miliseconds,
but ip_nat_check_timeout() thinks it's in seconds.

With this bug, all nat entries will expire immediately when
ip_nat_check_timeout() is called.

Note sys_timeout() is in miliseconds.

ref: http://savannah.nongnu.org/bugs/?38219

[DFS] Fix the ramfs issue.

修正components.h中使能RT_USING_DFS_RAMFS宏时，加入ramfs.h头文件

修正finsh不能正确处理"\""和"\x1A"转义;

finsh: change no echo mode. cpp: remove RT_USE_LIBC depends

Signed-off-by: SchumyHao <bob-hjl@126.com>

Signed-off-by: SchumyHao <bob-hjl@126.com>

比如实际目录为abcde，msh执行 cd abc也能执行成功，判断名称时存在bug

For using pthread with IAR tool chain

[DeviceDrivers] Add hardware timer framework

add w25q80 support to spi flash

Fix lpc4088candriver

Sdio

Roughly backport of commit 75534a04327b54f upstream.

Signed-off-by: pangwei <271372443@qq.com>

This reverts commit 326a7d7496.

Add Can Drv

1.Fixed PASV mode issue;
2.Implement RNFR and RNTO command;
3.Change some command code according RFC959;
4.Add command for msh shell;
5.Implement "noop" command.

Update for dfs_lwip and completion.

The problem of finding ethernet interface

To avoid same file name, therefore change the netdb.c to lwip_netdbc in
dfs_lwip.

The old `--keep` parameter for Keil is wrong. RTFM of Keil and get it
right.

Remove dataqueue/pipe if not enable RT_USING_HEAP, supply the missing `not`.

fix: completion wait after, maybe can't clean the flag.

[BSP] Correct pin register name problems

format. It is targeted at 32 bit microcontrollers, but is also fit for
other embedded systems with tight (2-10 kB ROM, <1 kB RAM) memory
constraints.(http://koti.kapsi.fi/jpa/nanopb/)

How to use the example:
	1. move examples/nanopb to bsp/xxxx/
	2. enable macro RT_USING_NANOPB in rtconfig.h
	3. regenerate the project file (scons --target=xxxx)
	4. rebuild the project

[Driver/ringbuffer]: Fix put_force bug

OXape reports: http://www.rt-thread.org/phpBB3/topic3939.html
          driver/ringbuffer: when data length is bigger than space length
          for rb, the read_index in rb is not update.
    When length > space, update the read_index, the bug can be fix, and
          works fine.

If there is no SHT$$INIT_ARRAY, calling
$Super$$__cpp_initialize__aeabi_() will fault. At least until Keil5.12
the problem still exists. So we have to initialize the C++ runtime our
own.