Fix #116 add configure.h for libmemcachedprotocol

[remicollet]

Fedora 35 build:

libmemcached-awesome rebuild using this patch https://koji.fedoraproject.org/koji/taskinfo?taskID=72673042

php-pecl-memcached rebuild using above https://koji.fedoraproject.org/koji/taskinfo?taskID=72673042

[codecov-commenter]

Codecov Report

Merging #117 (4642f94) into v1.x (b73f12a) will decrease coverage by 0%. The diff coverage is n/a.

:exclamation: Current head 4642f94 differs from pull request most recent head 8b3a224. Consider uploading reports for the commit 8b3a224 to get more accurate results

@@          Coverage Diff          @@
##            v1.x    #117   +/-   ##
=====================================
- Coverage     68%     68%   -0%     
=====================================
  Files        192     192           
  Lines      17450   17450           
=====================================
- Hits       11902   11885   -17     
- Misses      5548    5565   +17     

Impacted Files	Coverage Δ
src/libmemcached/io.cc	65% <0%> (-5%)	:arrow_down:
test/lib/Connection.cpp	79% <0%> (+5%)	:arrow_up:

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[remicollet]

@m6w6 ready for review.

[m6w6]

Thank you!