Test if icon theme file is outdated, i.e. modification time of cache file is older than modification time of icon theme directory.
This function is static and therefore can be used before actual reading and validating cache file.
FileException on error accessing the file.
See Implementation
Test if icon theme file is outdated, i.e. modification time of cache file is older than modification time of icon theme directory.
This function is static and therefore can be used before actual reading and validating cache file.