Allow curves to be tabled inline

[BMagnu]

This allows simple curves to be tabled inline wherever they are used, instead of forcing individual curve table entries.
Inline curves notably support only a much smaller subset of features, but that is perfectly sufficient for a large number of curves.
This can be used everywhere where curves are currently addressed by name in parsing.
An example table with inline curves would look as follows:

#Primary Weapons

$Name:                            @Subach HL-7
+nocreate
$Lifetime Curve:
+Input: Lifetime
+Output: Laser Radius Mult
+Curve Name: (0,0) -- (0.5,1000) -- (1,0)
$Lifetime Curve:
+Input: Lifetime
+Output: Laser Glow R Mult
+Curve Name: (0,0) -- (0.5,1000) -- (1,0)

#End

Note, that this will prevent curves from having a name that starts with an opening parenthesis.

For now, possible interpolations in inline mode are: --: Linear, -|: Constant, -/: Square with ease-in, /-: Square with ease-out.