• Enforce JAVA_VERSION when launching javavm(1), otherwise the program crashes when several JDK versions are installed and javawm(1) picks higher version (happens when /usr/ports/Mk/bsd.java.mk is absent, contrary to documented selection process which is designed to behave almost identically WRT presence/absence of /usr/ports/Mk/bsd.java.mk
• While here, simplify the script a bit and remove keywords and their expansion, they are useless for wrapper scripts

PR: 250268
Submitted by: rodrigo