Improve phpinfo information

[remicollet]

• display libmemcached-awesome when used (since 1.1.1)
• display both builtime and runtime versions when different

Ex:

$ php --ri memcached

memcached

memcached support => enabled
Version => 3.1.5
libmemcached-awesome version => 1.1.1
...

$ php --ri memcached

memcached

memcached support => enabled
Version => 3.1.5
libmemcached-awesome headers version => 1.1.0
libmemcached-awesome library version => 1.1.1
...

[remicollet]

@m6w6 FYI, related to libmemcached-awesome and awesomized/libmemcached#115

[sodabrew]

Quick bikeshed discussion:

I like the idea of separating out a row for headers and a row for the runtime library. That makes sense.

Instead of varying the "key" names, how about something like:

key	value
libmemcached headers version	1.0.16
libmemcached library version	1.0.18
libmemcached flavor	regular

or slightly different text:

key	value
libmemcached version (compiled)	1.1.1
libmemcached version (runtime)	1.1.1
libmemcached flavor	awesome

Are the headers mutually compatible or incompatible? If it's possible to drop in a libmemcached-awesome library at runtime, the output would need to distinguish like "1.1.1 awesome" vs. "1.0.18 regular".

(In all likelihood, there won't be a conflicting 1.1.1-regular vs. 1.1.1-awesome, but worth wondering aloud for a moment.)

[remicollet]

Yes, this is another way to give the information, but I don't really like the "regular" word, would prefer something like "the old dead and deprecated one" ;)

[Kholodny]

Hi! How did you install the memcached extension using libmemcached-awesome?
i'm stuck on checking for libmemcached location... configure: error: memcached support requires libmemcached. Use --with-libmemcached-dir=

to specify the prefix where libmemcached headers and library are located

centos 7