Overrides special infected targeting players.
  * ignore player who is pinned by smoker & hunter.
  * change target to nearest survivor no matter vomited survivors, vomited specials, incapped, pinned, hanging from ledge etc.

Original plugin: https://forums.alliedmods.net/showthread.php?p=2680135

-Change Log-
1.4 (23-Feb-2021)
	- fixed m_isIT not found
	
1.3 (20-Feb-2021)
	- Add more convars

1.2 (21-Jan-2020) by Harry
	- ignore player who is pinned by smoker & hunter.
	- change target to nearest survivor no matter anyone gets vomited.
	
1.1 (14-Jan-2020)
	- Fixed invalid entity. Thanks to "Venom1777" for reporting.

1.0 (13-Jan-2020)
	- Initial release.
  
-ConVar-
"l4d_target_patch_allow",			"1",				"0=Plugin off, 1=Plugin on."
"l4d_target_patch_modes",			"",					"Turn on the plugin in these game modes, separate by commas (no spaces). (Empty = all)."
"l4d_target_patch_modes_off",		"",					"Turn off the plugin in these game modes, separate by commas (no spaces). (Empty = none)."
"l4d_target_patch_modes_tog",		"0",				"Turn on the plugin in these game modes. 0=All, 1=Coop, 2=Survival, 4=Versus, 8=Scavenge. Add numbers together."
"l4d_target_patch_targets",			"12",				"0=Off. these Special Infected affected by this plugin: 1=Smoker, 2=Boomer, 4=Hunter, 8=Tank, 15=All. Add numbers together."
"l4d_target_patch_incap",			"1",				"If 1, Special Infected ignores player who is incapacitated."
"l4d_target_patch_pinned",			"1",				"If 1, Special Infected ignores player who is pinned by another infected."
"l4d_target_patch_hanging",			"1",				"If 1, Special Infected ignores player who is hanging from ledge."
"l4d_target_patch_vomit",			"0",				"If 1, Special Infected ignores player who is on vomit."