Add spaces: Oneoftheregularsbythecardtablemustbehisbrother,becausetheyareaslikeastwodropsofouzo.

Answer: One of the regulars by the card table must be his brother, because they are as like as two drops of ouzo.

Add spaces: Fortheentire1260years,theemperorsacknowledgedthesupremepowerofreligion.

Answer: For the entire 1260 years, the emperors acknowledged the supreme power of religion.

Add spaces: TheMOD_DATEissuedescribedinKB4011235.

Answer:
The MOD_DATE issue described in KB4011235.