gdb/:

gdb/:
* printcmd.c (do_one_display): If display/i, start with an initial
line feed to avoid bad layout if there is a branch delay slot.

gdb/testsuite/:
* gdb.base/display.exp: Allow a newline after display/i.
* gdb.base/pc-fp.exp: Likewise.
* gdb.base/sigbpt.exp: Likewise.