tde_curdatetime: Add the -u option to call 'date'

so that the result is not time zone dependent.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 43763c6adf)

modules/TDEMacros.cmake

@@ -1119,7 +1119,7 @@ macro( tde_curdatetime result )
   elseif( TDE_SCM_MODULE_DATETIME )
     set( ${result} ${TDE_SCM_MODULE_DATETIME} )
   else( )
-    tde_execute_process( COMMAND "date" "+%m/%d/%Y %H:%M:%S" OUTPUT_VARIABLE ${result} )
+    tde_execute_process( COMMAND "date" "-u" "+%m/%d/%Y %H:%M:%S" OUTPUT_VARIABLE ${result} )
     string( REGEX REPLACE "(..)/(..)/(....) (........).*" "\\1/\\2/\\3 \\4" ${result} ${${result}} )
   endif( )
 endmacro( tde_curdatetime )