Log message:
Update to 1.21, from Quentin Garnier in PR 21918.
Changes:
1.21 - 28 April 2003
* Tests 148 & 150 from t/02zlib.t were failing on redhat 9.
* Added a few words about the problems with Mac OS X to the README file.
1.20 - 4 April 2003
* Fixed bug in gzopen where $gzerrno wasn't being set correctly.
The symptom was $gzerrno was set to Z_MEM_ERROR although the file
was opened ok. If gzopen failed, $gzerrno was being set correctly.
This problem wasn't spotted before because the typical test
to determine whether gzopen passed or failed was to check its
return value.
1.19 - 31 October 2002
* fixed a problem with t/02zlib.t that was failing with redhat 8.
1.18 - 24 October 2002
* fixed a Win32 problem in t/02zlib.t by changing sysread to read.
* zlib 1.0.5 & older doesn't have gzsetparams & gzeof. Added a new
variable to config.in to flag an old version of zlib. Split
out the tests for gzsetparams into t/05gzsetp.t
1.17 - 22 October 2002
* Moved the test to check the versions of libz & zlib.h into a separate
file and added troubleshooting notes to README.
* In gzopen, only attempt to call "tell" for normal files.
* Broke changes out of README into Changes file.
* Replaced internal use of Z_PARTIAL_FLUSH symbol with Z_SYNC_FLUSH.
zlib.h says /* will be removed, use Z_SYNC_FLUSH instead */
* Added support for zlib functions inflateSync and deflateParams.
* Added support for zlib functions gzeof and gzsetparams.
* Added support for access to adler, total_in & total_out
* The compress function can now take an optional parameter that
allows the compression level to be specified. This mirrors the
compress2 function available in zlib.
* memGzip doesn't work properly with perl 5.8.0 when it is given
UTF-8 data. Bug spotted by Andreas J. Koenig.
* Added note about Linux zlib-devel RPM to README.
* Fixed recursive build problem on win32 machines.
* Fixed problem with the test harness on Mac OS X.
Thanks to Carl Johan Berglund for reporting the problem and
helping track it down.
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