VS: Fix /MANIFESTUAC:NO linker option mapping

There are no versions of /MANIFESTUAC:NO where addition values are
appended.  Remove both of the MANIFESTUAC:NO entries from our flag
tables and replace them with one which would set EnableUAC to false and
immediately stop processing the /MANIFESTUAC:NO option.

Source/cmVS10LinkFlagTable.h

@@ -191,10 +191,7 @@ static cmVS7FlagTable cmVS10LinkFlagTable[] =
   {"LinkDLL", "DLL", "", "true", 0},
 
   //Bool Properties With Argument
-  {"EnableUAC", "MANIFESTUAC:NO", "", "false",
-   cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue},
-  {"EnableUAC", "MANIFESTUAC:NO", "Enable User Account Control (UAC)", "",
-   cmVS7FlagTable::UserValueRequired},
+  {"EnableUAC", "MANIFESTUAC:NO", "", "false", 0},
   {"EnableUAC", "MANIFESTUAC:", "", "true",
    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue},
   {"UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",

Source/cmVS11LinkFlagTable.h

@@ -217,10 +217,7 @@ static cmVS7FlagTable cmVS11LinkFlagTable[] =
   {"LinkDLL", "DLL", "", "true", 0},
 
   //Bool Properties With Argument
-  {"EnableUAC", "MANIFESTUAC:NO", "", "false",
-   cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue},
-  {"EnableUAC", "MANIFESTUAC:NO", "Enable User Account Control (UAC)", "",
-   cmVS7FlagTable::UserValueRequired},
+  {"EnableUAC", "MANIFESTUAC:NO", "", "false", 0},
   {"EnableUAC", "MANIFESTUAC:", "", "true",
    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue},
   {"UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",

Source/cmVS12LinkFlagTable.h

@@ -217,10 +217,7 @@ static cmVS7FlagTable cmVS12LinkFlagTable[] =
   {"LinkDLL", "DLL", "", "true", 0},
 
   //Bool Properties With Argument
-  {"EnableUAC", "MANIFESTUAC:NO", "", "false",
-   cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue},
-  {"EnableUAC", "MANIFESTUAC:NO", "Enable User Account Control (UAC)", "",
-   cmVS7FlagTable::UserValueRequired},
+  {"EnableUAC", "MANIFESTUAC:NO", "", "false", 0},
   {"EnableUAC", "MANIFESTUAC:", "", "true",
    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue},
   {"UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",