Update pear.php.net and pecl.php.net links to https

[jordikroon]

Replacements done by:

find . -path ./.git -prune -o -type f -print0 \                                                                                                                                      
| xargs -0 perl -pi -e 's{http://pear\.php\.net}{https://pear.php.net}g'

find . -path ./.git -prune -o -type f -print0 \                                                                                                                                      
| xargs -0 perl -pi -e 's{http://pecl\.php\.net}{https://pecl.php.net}g'