JBIDE-18340 NullPointerException occures when opening properties file from external jar

In case of a link in Linux, java.io.File.equals returns false,
if instance with absolute path is compared to an instance with
an alias in its path. It is only safe to compare canonical paths.
JBIDE-18446 - cache on github should be outdated due to 0 remote timestamp
Updated parent pom to 4.2.0.CR2
JBIDE-18506 Usage plugin sometimes locks JBT/JBDS
Updated parent pom to 4.2.0.Final-SNAPSHOT
JBIDE-18247 : set 5sec timeout in ide-config.properties resolution

Signed-off-by: Fred Bricon <fbricon@gmail.com>