dtrace in cmake

1. ignore generated dtrace files
2. don't rewrite probes_mysql_nodtrace.h in-place

.gitignore

@@ -61,6 +61,9 @@ include/mysql_version.h
 include/mysqld_ername.h
 include/mysqld_error.h
 include/sql_state.h
+include/probes_mysql.d
+include/probes_mysql_dtrace.h
+include/probes_mysql_nodtrace.h
 info_macros.cmake
 libmysql*/libmysql*_exports_file.cc
 libmysql*/merge_archives_mysql*.cmake

cmake/dtrace.cmake

@@ -86,6 +86,9 @@ IF(ENABLE_DTRACE)
   ${CMAKE_BINARY_DIR}/include/probes_mysql_dtrace.h
   ${CMAKE_BINARY_DIR}/include/probes_mysql_nodtrace.h
   ) 
+ELSE()
+ CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/include/probes_mysql_nodtrace.h.in
+   ${CMAKE_BINARY_DIR}/include/probes_mysql_nodtrace.h COPYONLY)
 ENDIF()
 
 FUNCTION(DTRACE_INSTRUMENT target)