Move headers from server/include to include/maxscale

- Headers now to be included as <maxscale/xyz.h>
- First step, no cleanup of headers has been made. Only moving
  from one place to another + necessary modifications.

server/modules/routing/binlog/maxbinlogcheck.c

@@ -38,7 +38,7 @@
 #include <sys/stat.h>
 
 #include <maxscale/alloc.h>
-#include <log_manager.h>
+#include <maxscale/log_manager.h>
 #include <blr.h>