changed some includes (from "FunkMonkey's MSVC patch" http://github.com/FunkMonkey/flusspferd/commit/741c90d1f1bee8723465ec7d69db6ce989f50120)

added potentially missing #include <cctype> (thx to "FunkMonkey")

added missing boost:: namespace (thx to "FunkMonkey")

configure: added help for spidermonkey_include_dir and root_path

Fixed detection for new jsid/jsvalue API

unified root API by using Macros if Typed Rooting is not supported (thx to Wes and gpsee inspiration)

since older SpiderMonkey does not support AddValueRoot made changes conditional

changed root to use Add*Root API to be compatible with JägerMonkey (untested)

fixed jsid/jsval issued with JägerMonkey

cmake: added detection for jägermonkey

changed github link to organization link

separate string_impl constructors to (hopefully) fix problems with MSVC

updated ChangeLog: FreeBSD Support

added Roman to the list of contributors.

powl, ceill, floorl, fmodl -> std:: equivalents from <cmath>