Add string_t SetEntPropString support for ep1 (fixes #1287)

[psychonic]

Quick and dirty fix for #1287

[DarthMan]

Thanks, works perfect :-)

[asherkin]

Nice! The changes here look good, but I'm pretty sure this'll break the Dark Messiah build - which has gotten lost from the SE_ range here (ep1 is 1, dm is 2, and ob is 3).

Guessing this code'll work fine on DM as well, so it probably just needs to be SOURCE_ENGINE < SE_ORANGEBOX?

[DarthMan]

Nice! The changes here look good, but I'm pretty sure this'll break the Dark Messiah build - which has gotten lost from the SE_ range here (ep1 is 1, dm is 2, and ob is 3).

Guessing this code'll work fine on DM as well, so it probably just needs to be SOURCE_ENGINE < SE_ORANGEBOX?

I guess it will. Anyway, my priority now is just Fortress Forever. So it's ok, but sure, if it's gonna work fine for DM too, u could just change it to work for source engine < orangebox.

[psychonic]

Nice! The changes here look good, but I'm pretty sure this'll break the Dark Messiah build - which has gotten lost from the SE_ range here (ep1 is 1, dm is 2, and ob is 3).

Guessing this code'll work fine on DM as well, so it probably just needs to be SOURCE_ENGINE < SE_ORANGEBOX?

Good catch. Thanks