Fix RunCMake.Configure test expectation newline matching

Teach FailCopyFileABI-check.cmake to convert CRLF to LF in the regular
expression read literally from its own source.

Tests/RunCMake/Configure/FailCopyFileABI-check.cmake

@@ -4,10 +4,11 @@ if(EXISTS "${log}")
 else()
   set(error_log "")
 endif()
-if(NOT error_log MATCHES "Cannot copy output executable.*
+string(REPLACE "\r\n" "\n" regex "Cannot copy output executable.*
 to destination specified by COPY_FILE:.*
 Unable to find the executable at any of:
   .*\\.missing")
+if(NOT error_log MATCHES "${regex}")
   string(REGEX REPLACE "\n" "\n  " error_log "  ${error_log}")
   set(RunCMake_TEST_FAILED "Log file:\n ${log}\ndoes not have expected COPY_FILE failure message:\n${error_log}")
 endif()