Description:
------------
I had 3 various installations with (debian, ubuntu and slackware) and versions of php >=5.4, one is 5.5.9 ...pecl version on is: 1.9.4
and all of them reported ERROR on command: 
$ pecl install oci8
no releases available for package "pecl.php.net/oci8"
...
after searching for reason i found solution:
adding space to empty "Accept-Encoding:" request header inside file ~/PEAR/REST.php, solved the problem on all 3 systems that i have...
install, download, remote-info... all works now (and before - not)
...
i am hoping that this bug was not already known...
...
it is related to all functionalities of pear/pecl, not just oci8 package.
...
maybe it is http server fault and not a bug (header can be empty) but it is better to prevent failures with this space added.

Test script:
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when someone has this problem (and surely lot of people must reach it),
this bash script will solve it:

#!/bin/bash
target=`pecl config-get php_dir`/PEAR/REST.php
        [ -f "$target" ] || { echo file $target not found; exit; }
sed -i 's/Accept-Encoding:\\r\\n/AcceptEncoding: \\r\\n/g' $target