New thread Jamfile. Requirement <threading>multi now correctly handled, even when requested with <threading>single. New project specific feature <threadapi> with values win32 and pthread available.

[SVN r40677]

Jamroot

@@ -99,6 +99,7 @@ import sequence ;
 
 path-constant BOOST_ROOT : . ;
 constant BOOST_VERSION : 1.35.0 ;
+constant BOOST_JAMROOT_MODULE : $(__name__) ;
 
 local version-tag = [ MATCH "^([^.]+)[.]([^.]+)[.]([^.]+)" : $(BOOST_VERSION) ] ;
 if $(version-tag[3]) = 0

libs/thread

@@ -1 +1 @@
-Subproject commit 3513eaf701484c413799b13c2b88598910c8e216
+Subproject commit 9b1d3f8f3c2f39340e24dea0aafd6aa24ec37c21