Fix #740: Add ee.minimum 1.2.1 and osgi.core 4.3.1 to buildrepo template

ee.minimum 1.2.1 adds generics to the execution environment API.
osgi.core 4.3.1 recompiles osgi.core 4.3.0 with -target 1.5 for use with
Java 7 javac which no longer supports the -target jsr14 class files used
in 4.3.0.
release: Update list of files to edit with release version numbers
release: Update release numbers to 2.2.0.RC2