Update udpserver.c

Update udpclient.c

Update tcpserver.c

[SFUD] Update the flash chip information table.

[finsh]Fixed a bug may cause stackover flow

完善 SPI 框架及驱动相关功能

This is 'tcp server', not is 'tcp client'
tcpclient -> tcpserver

This is 'udp server', not is 'tcp client'
tcpclient -> udpserver

This is 'udp client', not is 'tcp client', so 
tcpclient -> udpclient

add code:
if (line_buf == RT_NULL) return -RT_ENOMEM;

[Sensor] Add Plantower sensor info

[tools] fixed python 2.x `cmp`

[lwip]Fixed a memset bug in ethernetif.c

[libcpu]Fixed the wrong notes in context_iar.S

Optimize project group sort by name

if LWIP_NETIF_HOSTNAME enable, the length is 'sizeof(struct netif)+ LWIP_HOSTNAME_LEN',
not only  equal to  'sizeof(struct netif)'.

swith -> switch

[bsp][imxrt] fix the gpio drivers warning,'int_mode' may be used unin…

Fix pthreads

[bsp][imxrt] fix docs and templates err