cc3200: Clean up and reduce use/include of std.h.

cc3200/bootmgr/main.c

cc3200/fatfs/src/ffconf.c

cc3200/ftp/ftp.c

cc3200/ftp/updater.c

cc3200/misc/mperror.c

cc3200/misc/mpexception.c

cc3200/mods/modnetwork.c

cc3200/mods/modpyb.c

cc3200/mods/moduos.c

cc3200/mods/modusocket.c

cc3200/mods/modwlan.c

cc3200/mods/pybsleep.c

cc3200/mptask.c

cc3200/serverstask.c

cc3200/telnet/telnet.c

cc3200/util/fifo.c

cc3200/util/hash.c

cc3200/util/socketfifo.c

cc3200/util/std.h