Add support for fully inline functions in methodmaps.

sourcepawn/compiler/tests/fail-method-name-too-long.sp

@@ -0,0 +1,7 @@
+methodmap ThisNameIsReallyLongWowItsVeryLong {
+	public ThisNameIsReallyLongWowItsVeryLong() {
+	}
+}
+
+public main() {
+}

sourcepawn/compiler/tests/fail-method-name-too-long.txt

@@ -0,0 +1 @@
+fully-qualified name "ThisNameIsReallyLongWowItsVeryLong.ThisNameIsReallyLongWowItsVeryLong" is too long, would be truncated to "ThisNameIsReallyLongWowItsVeryLong.ThisNameIsReallyLongWowItsVe"

sourcepawn/compiler/tests/ok-inline-methods.sp

@@ -0,0 +1,13 @@
+methodmap Crab {
+	public Crab(n) {
+		return Crab:n;
+	}
+	public int Value() {
+		return _:this;
+	}
+};
+
+public main() {
+	new Crab:crab = Crab(5);
+	return crab.Value();
+}