Fontcustom command is running for each individual SVG icon

[johanbrook]

The main code involving fontcustom compile is run for every single SVG icon in the source directory.

Instead of running the code for each file in the stream, it should wait for the whole directory (the directory name is the only thing relevant for using fontcustom) and then invoke the command.

[josx]

+1 thats the reason is too slow!