move files for build script

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/ast/CMakeLists.txt

@@ -24,7 +24,6 @@ z3_add_component(ast
     expr_map.cpp
     expr_stat.cpp
     expr_substitution.cpp
-    factor_equivs.cpp
     for_each_ast.cpp
     for_each_expr.cpp
     format.cpp

src/ast/rewriter/CMakeLists.txt

@@ -16,6 +16,7 @@ z3_add_component(rewriter
     enum2bv_rewriter.cpp
     expr_replacer.cpp
     expr_safe_replace.cpp
+    factor_equivs.cpp
     factor_rewriter.cpp
     fpa_rewriter.cpp
     inj_axiom.cpp

src/ast/rewriter/factor_equivs.cpp

@@ -25,11 +25,12 @@ Revision History:
 
 */
 
-#include "ast/factor_equivs.h"
 #include "ast/arith_decl_plugin.h"
 #include "ast/for_each_expr.h"
 #include "ast/ast_pp.h"
 #include "ast/rewriter/expr_safe_replace.h"
+#include "ast/rewriter/factor_equivs.h"
+
 /**
    Factors input vector v into equivalence classes and the rest
  */