fix git-revision.h generation: output to build tree and add missing dependencies

Generate git-revision.h into CMAKE_BINARY_DIR/src/ (which is in the
include path) instead of the source tree. Remove the header from
add_executable() source lists, and add missing add_dependencies on
git_revision for all Qt5/Qt6 targets.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CMakeLists.txt

@@ -241,16 +241,14 @@ endif ()
 #--- start create git-revision.h ----------------------------------------------
 if (IS_GIT_REPO)
   add_custom_target(git_revision ALL
-    COMMAND sh ${CMAKE_SOURCE_DIR}/src/git_revision.sh
+    COMMAND sh ${CMAKE_SOURCE_DIR}/src/git_revision.sh ${CMAKE_BINARY_DIR}/src
     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
     COMMENT "Checking git revision"
   )
 
   set(HAVE_GIT_REV_H "-DHAVE_GIT_REV_H")
-  set(GIT_REV_H "git-revision.h")
 else (IS_GIT_REPO)
   set(HAVE_GIT_REV_H "")
-  set(GIT_REV_H "")
 endif (IS_GIT_REPO)
 
 #--- end create git-revision.h ------------------------------------------------