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>

src/musredit_qt5/mupp/CMakeLists.txt

@@ -90,6 +90,10 @@ target_include_directories(mupp
 #--- use the Widgets and XML modules from Qt5 ---------------------------------
 target_link_libraries(mupp PRIVATE Qt5::Widgets Qt5::Xml)
 
+if (IS_GIT_REPO)
+  add_dependencies(mupp git_revision)
+endif (IS_GIT_REPO)
+
 #--- if macOS make an app rather than just a command line executable ----------
 set_target_properties(mupp PROPERTIES
   VERSION ${mupp_VERSION}

src/musredit_qt5/musrStep/CMakeLists.txt

@@ -51,6 +51,10 @@ target_compile_options(musrStep
 
 target_link_libraries(musrStep PRIVATE ${qt_libs})
 
+if (IS_GIT_REPO)
+  add_dependencies(musrStep git_revision)
+endif (IS_GIT_REPO)
+
 #--- installation info --------------------------------------------------------
 if (APPLE)
   set_target_properties(musrStep PROPERTIES

src/musredit_qt5/musrWiz/CMakeLists.txt

@@ -55,6 +55,10 @@ target_compile_options(musrWiz
 
 target_link_libraries(musrWiz PRIVATE ${qt_libs})
 
+if (IS_GIT_REPO)
+  add_dependencies(musrWiz git_revision)
+endif (IS_GIT_REPO)
+
 #--- installation info --------------------------------------------------------
 if (APPLE)
   set_target_properties(musrWiz PROPERTIES

src/musredit_qt5/musredit/CMakeLists.txt

@@ -105,6 +105,10 @@ target_compile_options(musredit
 
 target_link_libraries(musredit PRIVATE ${qt_libs})
 
+if (IS_GIT_REPO)
+  add_dependencies(musredit git_revision)
+endif (IS_GIT_REPO)
+
 #--- installation info --------------------------------------------------------
 if (APPLE)
   set_target_properties(musredit PROPERTIES