"rb" = binary file for *reading* (not writing, that would be "wb").

Check short name for remote extensions

* Fix CSGO Update crash (11/19/2019)

We know what happened when Valve do something big.
Not tested on Linux

* Fix RoundRespawn on Windows

* Fix TerminateRound on Linux x86

* Comment out Linux x64 part of TerminateRound

Better leave blank here.

Update SourcePawn.

https://crash.limetech.org/stats/dbi.mysql.ext.%25/my_real_read
https://crash.limetech.org/stats/dbi.mysql.ext.%25/net_real_write

Both of these are caused by the VIO ptr ending up as null in the middle of reading/writing to a connection - I can't find any indication of a fix for this made to MySQL, so don't think it is a bug fix we're missing, but there are some musings around the internet that it could be caused by improper thread-safety initialisation.

`my_init` (what we had here) is called internally by `mysql_library_init` but I think would have still led to an automatic `mysql_library_init` call the first time `mysql_init` was called (which we can do on a thread in case of threaded connections), which is exactly the thread-safety issue called out by the MySQL docs, so hopefully doing things properly here will help.

Update SourcePawn to tip-of-tree.

This fixes:
 alliedmodders/sourcepawn#432
 alliedmodders/sourcepawn#435
 alliedmodders/sourcepawn#439

Update SourcePawn.