jcov build is broken for all platforms

jcov build is broken for all platform during swing javadoc build, because OTHER_JAVACFLAGS is mistakenly included in JAVADOCFLAGS:

Error message
=============
javadoc: invalid flag: -Xjcov

Makefile diff
=============
j2se/make/javax/swing/beaninfo/SwingBeans.gmk
java_re@mizu%<7>sccsdiff -r1.55 -r1.56 SCCS/s.SwingBeans.gmk
33c33
< JAVADOCFLAGS = -J-ms64m -J-mx128m $(HOTSPOT_INTERPRETER_FLAG)
---
> JAVADOCFLAGS = $(LANGUAGE_VERSION) -J-ms64m -J-mx128m $(OTHER_JAVACFLAGS) $(HOTSPOT_INTERPRETER_FLAG)