Revert "with the recent changes in URI::Escape, some tests now fail on older perls"

This reverts commit d0163ec0961d88a8705a54dcd3b65a0a7d44bf3f.

Conflicts:
	Changes

Proper fix follows...
force a fetch in advance of using $1, for older perls (see RT#96941) - patch from Eric Brine
faster way to split a string by character (patch from Eric Brine in RT#96941)
bump Test::More prereq to 0.96, for subtest without explicit plan
improved Makefile.PL, with more accurate metadata (no prereq changes here)
also ignore our own untarred dist dir
prepare for 1.64 release