Update to 6.10

Upstream changes:
Changes in Devel::NYTProf 6.10 - 9th May 2021

There should be no significant differences in the performance of Devel-NYTProf from that of the previous release. This release is primarily focused on upgrading the jquery used and improvements to Makefile.PL and the test suite.
Substantive

GH 186: Updated jquery components to version 3.4.1, based on bug report GH 132 filed by Matthew Musgrove and original patch submitted by Reini Urban.

Eliminated some C++ build-time warnings through patches submitted by Reini Urban.

Officially discouraged use of Devel::NYTProf::Apache. While it remains in the CPAN distribution, it is not exercised by the test suite and has not been updated for many years. We are open to offers to spin it out to its own CPAN distribution.
Test Suite

Skip 4 test files on (Linux) quadmath builds; profile data used in these tests not (yet) appropriate. Thanks to Slaven Rezić and H. Merijn Brand for discussion in GH 168 and GH 188.
Housekeeping

GH 185: Added make target disttest_author for more thorough testing of release tarball.
Changes in Devel::NYTProf 6.09 - 2nd May 2021

There should be no significant differences in the performance of Devel-NYTProf from that of the previous release. This release is primarily focused on correcting problems in the test suite introduced in version 6.08 6 days earlier.
Substantive

Devel::NYTProf::Util::fmt_float() modified to strip off more than one leading 0. Thanks to Shawn Laffan in GH 170.
Test Suite

All test files now run with use strict; use warnings;.

t/11-reader.t, t/12-data.t, t/13-fileinfo.t, t/14-subinfo.t are now skipped on longdouble builds and when NYTP_ZLIB_VERSION is not set. The profile data files these tests use do not work in those contexts. This should reduce the number of false negatives reported by CPANtesters. Thanks to Tinita for feedback in GH 169.

xt/90-pod.t transferred back to t/ but will only run when environmental variable NYTPROF_AUTHOR_TESTING is set.
Housekeeping

Created environmental variable NYTPROF_AUTHOR_TESTING to regulate when certain unit tests and test files are run. Created `make` targets test_author and atest (an alias) to take advantage of this envvar.

(wen)