Add flags to PECL shell script for shared extensions

[petk]

Hello,

when PHP is using shared extensions (this goes mainly for the xml and openssl) the php CLI command needs to enable those separately for each required extension that PEAR and PECL are using.

To illustrate this more simply:

When PHP is build with something like

./configure --with-openssl=shared --enable-xml=shared

Then pecl CLI script won't work ok... This patch fixes this.

[petk]

Worth noting here also is another simpler solution where a simple removal of the -n option from the pecl shell script works just as good. Certain Linux 3rd party repositories, for example, do this kind of approach and it seems to be working also good

[petk]

@ashnazg sorry to ping you, since I've seen you've done some contributions in the not so distant past here, is there any option that the -n option for the pecl script is removed? I can refactor this pull request if that's a good way to go here then.

Thank you.

[ashnazg]

@petk , yes, refactor to the simpler -n idea, and let me see how the builds react.

[petk]

@ashnazg refactored, so now only the -n option has been removed. For example, Ubuntu PHP 7.2 development package for Ubuntu 18.10 uses also such approach where this -n option is omitted.