Properly generated flag for intel/<compatibility>vc.

	* intel-win.jam (init): Strip 'vc' from the
	version passed to msvc.configure-verion-specific.
	* msvc.jam (configure-version-specific): Accept '6' and '7',
	not just 6.N and 7.N.


[SVN r35071]

tools/build

@@ -1 +1 @@
-Subproject commit 538de7b8785169f18a7d291eba4629d082d24968
+Subproject commit 698d25a4743a9b3811aeb3f5af06594eba7f3af0