Import SQLite 3.8.7.4.

third_party/sqlite/src/ext/icu/README.txt

 
 This directory contains source code for the SQLite "ICU" extension, an
 integration of the "International Components for Unicode" library with
 SQLite. Documentation follows.
 
     1. Features
     
         1.1  SQL Scalars upper() and lower()
         1.2  Unicode Aware LIKE Operator
         1.3  ICU Collation Sequences
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   1.4 SQL REGEXP Operator
 
     This extension provides an implementation of the SQL binary
     comparision operator "REGEXP", based on the regular expression functions
     provided by the ICU library. The syntax of the operator is as described
     in SQLite documentation:
 
         <string> REGEXP <re-pattern>
 
     This extension uses the ICU defaults for regular expression matching
-    behaviour. Specifically, this means that:
+    behavior. Specifically, this means that:
 
         * Matching is case-sensitive,
         * Regular expression comments are not allowed within patterns, and
         * The '^' and '$' characters match the beginning and end of the
           <string> argument, not the beginning and end of lines within
           the <string> argument.
 
     Even more specifically, the value passed to the "flags" parameter
     of ICU C function uregex_open() is 0.
 
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     an index has been built is therefore equivalent to database
     corruption. The SQLite library is not very well tested under
     these conditions, and may contain potential buffer overruns
     or other programming errors that could be exploited by a malicious
     programmer.
 
     If the ICU extension is used in an environment where potentially
     malicious users may execute arbitrary SQL (i.e. gears), they
     should be prevented from invoking the icu_load_collation() function,
     possibly using the authorisation callback.