[CMake] Add back find_package(OpenMP) and add find_package(TCL) to MultiSource/Applications/sqlite3/

MultiSource/Applications/sqlite3/test15.sql needs TCL_TCLSH.
External/sollve_vv needs OpenMP and there may be more OpenMP benchmarks in the future (D70065).
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d531fc..b06b7c5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -233,6 +233,8 @@
 
 include(TestSuite)
 include(SingleMultiSource)
+# Needs by External/sollve_vv.
+find_package(OpenMP)
 
 if(NOT DEFINED TARGET_OS)
   message(STATUS "Check target operating system - ${CMAKE_SYSTEM_NAME}")
diff --git a/MultiSource/Applications/sqlite3/CMakeLists.txt b/MultiSource/Applications/sqlite3/CMakeLists.txt
index 3eeb414..67e07db 100644
--- a/MultiSource/Applications/sqlite3/CMakeLists.txt
+++ b/MultiSource/Applications/sqlite3/CMakeLists.txt
@@ -8,6 +8,7 @@
 else()
   set(SQLITE_INPUTNAME speedtest)
 endif()
+find_package(TCL)
 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/test15.sql
     COMMAND ${TCL_TCLSH} ${CMAKE_CURRENT_SOURCE_DIR}/${SQLITE_INPUTNAME}.tcl
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}