So they are distinct from CC3200 projects during import

Also update compiler version (5.2.7 -> 5.2.8)

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Main TODOs:
1. the spec requires the impl to resend the reply once and
   to send gratuitous updates

2. advertise our clubby services as DNS-SD sub-services.

---

Tested with:

1. https://play.google.com/store/apps/details?id=com.grokkt.android.bonjour&hl=en
2. https://play.google.com/store/apps/details?id=com.druk.bonjour.browser&hl=en
3. osx `dns-sd`

Works well enough; it doesn't have some glitches due the fact that we
don't retransmit yet and we don't send gratuitous updates.

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On my way, fixed a couple of cases where we had `()` in the header, and
non-empty argument list in the source file.

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Use templated index page and SSI calls instead of hard-coded html

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In CCS example projects

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/sys/mcuimg.bin is just another file on SLFS, no reason to give it
special treatment. Preserve backward compatibility with old bundles:
translate sys_mcuimg.bin -> /sys/mcuimg.bin

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SL requires cert and key to be separate files in DER format.

Date verification is disabled for now.

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Make restful_server and netcat examples compilation tests:
 - netcat doesn't use HTTP, compile it with MG_DISABLE_HTTP
 - restful_server doesn't use websocket, compile it with
   MG_DISABLE_HTTP_WEBSOCKET

h/t @labourcier, cesanta/mongoose#665

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 * Add TI compiler
 * Remove cc3200prog, we don't use it
 * Update to Xenial (new Ubuntu stable release).
   It has ARM toolchain in the repos too, which is nice (no more PPA).

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It's barely used in our code and conflicts with ont in SimpleLink SDK

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