MDEV-4425

Adding ${CMAKE_BINARY_DIR}/pcre into search path for *.h files.
Needed for find pcre.h (which is generated from pcre.h.in) when
build directory != source directory.

sql/CMakeLists.txt

@@ -16,6 +16,7 @@
 INCLUDE_DIRECTORIES(
 ${CMAKE_SOURCE_DIR}/include 
 ${CMAKE_SOURCE_DIR}/sql 
+${CMAKE_BINARY_DIR}/pcre 
 ${CMAKE_SOURCE_DIR}/pcre 
 ${ZLIB_INCLUDE_DIR}
 ${SSL_INCLUDE_DIRS}