Fixed build failures

- Removed references to deleted files
- If we link staticly, check for static zlib
  - This should fix the problem with 'no -lz found' link error
- Fixed build failure on window (Patch from Wlad)
- Fixed build problem with federatedx when using -Werror

BUILD/Makefile.am:
  Remove removed file
config/ac-macros/zlib.m4:
  If we compile with --all-static, test that we have a static libz
libmysqld/CMakeLists.txt:
  Fix for build error on windows
mysql-test/suite/pbxt/r/key_cache.result:
  Updated result
mysql-test/suite/pbxt/t/key_cache.test:
  Fixed not updated test case
sql/CMakeLists.txt:
  Fix for build error on windows
storage/federatedx/Makefile.am:
  Don't use CFLAGS to compile C++ programs
storage/pbxt/src/lock_xt.cc:
  Fixed compiler warning about using uninitialized b2
storage/xtradb/buf/buf0buf.c:
  Fixed wrong printf
storage/xtradb/srv/srv0srv.c:
  Fixed assignment of different width and test with different sign/unsigned

mysql-test/suite/pbxt/r/key_cache.result

@@ -315,8 +315,7 @@ test.t1	check	status	OK
 DROP TABLE t1,t2;
 set global key_cache_block_size= @my_key_cache_block_size;
 set @@global.key_buffer_size=0;
-Warnings:
-Warning	1438	Cannot drop default keycache
+ERROR HY000: Cannot drop default keycache
 select @@global.key_buffer_size;
 @@global.key_buffer_size
 1048576

mysql-test/suite/pbxt/t/key_cache.test

@@ -220,6 +220,7 @@ set global key_cache_block_size= @my_key_cache_block_size;
 # Bug#10473 - Can't set 'key_buffer_size' system variable to ZERO
 # (One cannot drop the default key cache.)
 #
+--error ER_WARN_CANT_DROP_DEFAULT_KEYCACHE
 set @@global.key_buffer_size=0;
 select @@global.key_buffer_size;