Update libcurl from 7.54.1 to 7.55.1.

Bug: http://b/64610131
Test: builds, boots, `vendor/google/tools/fake-ota on streaming` works
Change-Id: I7ecaf9c83e9496ac4a379507791bec637deaa4cb
diff --git a/docs/libcurl/opts/CURLOPT_RANGE.3 b/docs/libcurl/opts/CURLOPT_RANGE.3
index 375a944..c82395e 100644
--- a/docs/libcurl/opts/CURLOPT_RANGE.3
+++ b/docs/libcurl/opts/CURLOPT_RANGE.3
@@ -20,7 +20,8 @@
 .\" *
 .\" **************************************************************************
 .\"
-.TH CURLOPT_RANGE 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
+.TH CURLOPT_RANGE 3 "December 21, 2016" "libcurl 7.55.1" "curl_easy_setopt options"
+
 .SH NAME
 CURLOPT_RANGE \- set byte range to request
 .SH SYNOPSIS
@@ -44,6 +45,9 @@
 npt, utc, or smpte formats.
 
 Pass a NULL to this option to disable the use of ranges.
+
+The application does not have to keep the string around after setting this
+option.
 .SH DEFAULT
 NULL
 .SH PROTOCOLS