cs_log_set_filter() is removed in favor of cs_log_set_file_level() which
allows setting log verbosity of individual files and/or lines.
E.g.: `mg_=1,mjs=1,=4` - level for for everything except mjs and mongoose.
We use the fact that we are usually pretty careful with our file names and use prefixes consistently.
In mos, `debug.file_level` sets the option on boot and `Sys.SetDebug` is updated to parse `file_level` option to change it at runtime.
CL: Log file:line instead of function; add cs_log_set_file_level()
PUBLISHED_FROM=49f18d4d0d3dd224865129a4f8fe6cccd1d9bc12
In SDK 1.2.0 TI decided to stop resetting NWP before sl_Start, which in
practice means that sl_start will hang on subsequent runs after the first.
See this post for details and suggested solution:
https://e2e.ti.com/support/wireless_connectivity/simplelink_wifi_cc31xx_cc32xx/f/968/p/499123/1806610#1806610
However, since they don't provide OS_debug variant of simplelink.a and
adding another project dependency will complicate our demo even more,
we just take the required bit of code.
PUBLISHED_FROM=c729c0fcbb240aa90a716edd43888de5881d6731
Mg_hello is a simpler example for CC3200
File upload form is served on / if index.html does not exist
and always available on /upload
PUBLISHED_FROM=f844245b26febc4b952e7c52ee4519ddb542072d
