add two new functions for var_dump(). dvr() and dvm() which are analogous to dpr() and dsm(). inspired by #58723

#83511 by bdragon. Devel mod can now spot duplicate queries again. This be my first commit since the new release system... hoping I don't screw it up

 #79236 add block rehash,
 #78521 dprint_r() gets html encoding,
 #78520 dpr() is now a true alias of dprint_r(),
 #78518 phpinfo body gets get stripped properly

nice new functions like dprint_r() for printing messages in status area of the page, and for printing out the arguments to the current function. written with jjeff while crossing the USA/Canada border.