Fix IMPORT_C/EXPORT_C mismatches in bsul and openenvcore/backend - Bug 2971
/** @file ../include/stdbool.h@internalComponent*//** @def __bool_true_false_are_definedExpands to the integer constant 1.@publishedAll@externallyDefinedApi*//** @typedef typedef int _Bool int value either to store 0 or 1.@publishedAll@externallyDefinedApi*/