Description:
------------
PECL memcache-3.0.8 fails with GCC 6 ("gcc version 6.2.1 20161209 [gcc-6-branch revision 243481] (SUSE Linux)" in openSUSE tumbleweed current)

There are clear build warnings wrt. inline functions in memcache_pool.h and memcache_queue.h, as shown below. At runtime, use of any real memcache operation after connect, results in "symbol lookup failure" messages, and aborts the script run.

The attached patch fixes the issue, by removing the "inline" in the four memcache_{pool,queue}.{c,h} files.

In file included from /usr/src/phb/build/release-5.6.28/memcache/php_memcache.h:34:0,
                 from /usr/src/phb/build/release-5.6.28/memcache/memcache.c:30:
/usr/src/phb/build/release-5.6.28/memcache/memcache.c: At top level:
/usr/src/phb/build/release-5.6.28/memcache/memcache_pool.h:395:12: warning: inline function ‘mmc_prepare_key’ declared but never defined
 inline int mmc_prepare_key(zval *, char *, unsigned int *);
            ^~~~~~~~~~~~~~~


Test script:
---------------
$mc = new Memcache();
$mc->connect('127.0.0.1', '11211', 5);
$mc->set('a', 23); # or any other real operation

Expected result:
----------------
works

Actual result:
--------------
/usr/bin/php5: symbol lookup error: /opt/php/extensions/memcache.so: undefined symbol: mmc_queue_pop