Added trailing zero to array.

[yuriisk]

Without much overhead, this commit allows to embed files with textual data and then pass a pointer to this data to any function that expects null-terminated string. When reading file with text, previously it was mandatory to make a copy of a content and append a trailing null character.

[vector-of-bool]

The original version of CMakeRC had this. I don't know why I didn't think to bring it back... Thanks!