tools/options: Fix typo (boostrap -> bootstrap)

Change-Id: I498ab08de4990006c424ca04e2db4be11556618e
cntl: provide htconfig_urltype option string

Change-Id: I28344838b67dba33cd09f704614cf09a1803af25
Allow to retrieve configuration from plain (non-streaming URIs) (WIP)

This adds a new URI Type (LCB_HTCONFIG_URITYPE_PLAIN) and does the
appropriate handling to ensure that the 4x-newline terminator is not
searched for when fetching the config.

Currently I've only tested this with `cbc` however, and is more
proof-of-concept than anything

Change-Id: Ifaf033b548c758d0f102dd0c289148a7d114024d