Fix for new warnings in memcache backported from mysql-trunk-cluster:

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revno: 3663
revision-id: magnus.blaudd@oracle.com-20140605095217-cmp3odmco9z7n8w5
parent: magnus.blaudd@oracle.com-20140605094150-o8bkqi2l442wcmya
committer: magnus.blaudd@oracle.com
branch nick: trunk-cluster
timestamp: Thu 2014-06-05 11:52:17 +0200
message:
  WL#6815 Adapt MySQL Cluster to 5.7  
   - The -Wdeclaration-after-statement has been made default
     for build of C files in 5.7. This flag turns on the warning
     "ISO C90 forbids mixed declarations and code" when code and
     declarations are mixed in a function. Most likely this intends
     to help with keeping the C code portable to compilers which
     does not yet support such constructs  - thus we should adapt
     all our code not to cause that warning.
   - Fix by changing the code in ndb_engine.c which uses
     said construct.