[CMake] Fix dependencies for generating install_tactic.cpp.

Previously CMake was not aware of which headers files the generation
of `install_tactic.cpp` depended on. Consequently this could result
in broken incremental builds if

* Existing headers that declared tactics/probes changed.
* New tactics/probes were added to new header files.

Now the `z3_add_component()` CMake function has been modifed to take an
optional `TACTIC_HEADERS` argument which allows the headers that declare
tactics/probes to be explicitly listed. The necessary component
declarations have been modified to declare their tactic/probe header
files.

With this information CMake will now regenerate `install_tactic.cpp`
correctly.

This required the `mk_install_tactic_cpp_internal()` function to be
changed to take a list of header files rather than a list of component
source directories. The two consumers (CMake and Python/Makefile build
systems) of this function have been modified to work with this change.

This partially fixes #1030.

src/tactic/core/CMakeLists.txt

@@ -3,7 +3,7 @@ z3_add_component(core_tactics
     blast_term_ite_tactic.cpp
     cofactor_elim_term_ite.cpp
     cofactor_term_ite_tactic.cpp
-    collect_statistics_tactic.cpp  
+    collect_statistics_tactic.cpp
     ctx_simplify_tactic.cpp
     der_tactic.cpp
     distribute_forall_tactic.cpp
@@ -23,5 +23,24 @@ z3_add_component(core_tactics
   COMPONENT_DEPENDENCIES
     normal_forms
     tactic
+  TACTIC_HEADERS
+    blast_term_ite_tactic.h
+    cofactor_term_ite_tactic.h
+    collect_statistics_tactic.h
+    ctx_simplify_tactic.h
+    der_tactic.h
+    distribute_forall_tactic.h
+    elim_term_ite_tactic.h
+    elim_uncnstr_tactic.h
+    nnf_tactic.h
+    occf_tactic.h
+    pb_preprocess_tactic.h
+    propagate_values_tactic.h
+    reduce_args_tactic.h
+    simplify_tactic.h
+    solve_eqs_tactic.h
+    split_clause_tactic.h
+    symmetry_reduce_tactic.h
+    tseitin_cnf_tactic.h
 )