cmake: better support for out-of-tree builds follow-up

In 7e0730c (t: better support for out-of-tree builds, 2024-12-06),
the `bin-wrappers/` strategy was changed so that it no longer hard-codes
the template directory to be `@BUILD_DIR@/templates/blt`, but instead
interpolates the `@TEMPLATE_DIR@` placeholder during the build.

However, this commit only adjusted the `Makefile`-based build.

Let's adjust the CMake-based build as well. This fixes t0000.15 which
would otherwise fail with:

  ++ echo ''\''t1234-verbose/err'\'' is not empty, it contains:'
  't1234-verbose/err' is not empty, it contains:
  ++ cat t1234-verbose/err
  warning: templates not found in @TEMPLATE_DIR@

Signed-off-by: Johannes Schindelin <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: dscho

contrib/buildsystems/CMakeLists.txt

@@ -1087,19 +1087,22 @@ set(wrapper_test_scripts
 foreach(script ${wrapper_scripts})
 	file(STRINGS ${CMAKE_SOURCE_DIR}/bin-wrappers/wrap-for-bin.sh content NEWLINE_CONSUME)
 	string(REPLACE "@BUILD_DIR@" "${CMAKE_BINARY_DIR}" content "${content}")
+	string(REPLACE "@TEMPLATE_DIR@" "'${CMAKE_BINARY_DIR}/templates/blt'" content "${content}")
 	string(REPLACE "@PROG@" "${CMAKE_BINARY_DIR}/${script}${EXE_EXTENSION}" content "${content}")
 	file(WRITE ${CMAKE_BINARY_DIR}/bin-wrappers/${script} ${content})
 endforeach()
 
 foreach(script ${wrapper_test_scripts})
 	file(STRINGS ${CMAKE_SOURCE_DIR}/bin-wrappers/wrap-for-bin.sh content NEWLINE_CONSUME)
 	string(REPLACE "@BUILD_DIR@" "${CMAKE_BINARY_DIR}" content "${content}")
+	string(REPLACE "@TEMPLATE_DIR@" "'${CMAKE_BINARY_DIR}/templates/blt'" content "${content}")
 	string(REPLACE "@PROG@" "${CMAKE_BINARY_DIR}/t/helper/${script}${EXE_EXTENSION}" content "${content}")
 	file(WRITE ${CMAKE_BINARY_DIR}/bin-wrappers/${script} ${content})
 endforeach()
 
 file(STRINGS ${CMAKE_SOURCE_DIR}/bin-wrappers/wrap-for-bin.sh content NEWLINE_CONSUME)
 string(REPLACE "@BUILD_DIR@" "${CMAKE_BINARY_DIR}" content "${content}")
+string(REPLACE "@TEMPLATE_DIR@" "'${CMAKE_BINARY_DIR}/templates/blt'" content "${content}")
 string(REPLACE "@GIT_TEXTDOMAINDIR@" "${CMAKE_BINARY_DIR}/po/build/locale" content "${content}")
 string(REPLACE "@GITPERLLIB@" "${CMAKE_BINARY_DIR}/perl/build/lib" content "${content}")
 string(REPLACE "@MERGE_TOOLS_DIR@" "${CMAKE_SOURCE_DIR}/mergetools" content "${content}")