Add stacktrace_to_short_text() for Java

[mhabrnal]

sr_stacktrace_to_short_text() uses for Java type the default stacktrace_to_short_text() function which do not normalize frames.

The truncated Java backtrace for 5 top frames can looks like follows:

#1 java.lang.NullPointerException
#2   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:30) [file:/usr/share/java/willcrash/willuncaught.jar]
#3   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:33) [file:/usr/share/java/willcrash/willuncaught.jar]
#4   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:33) [file:/usr/share/java/willcrash/willuncaught.jar]
#5   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:33) [file:/usr/share/java/willcrash/willuncaught.jar]

Some information is not needed in truncated backtrace, for instance file part. We would like to have something like follows:

#1 java.lang.NullPointerException
#2   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:30)
#3   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:33)
#4   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:33)
#5   at WontCatchNullPointerException.die_hard(WontCatchNullPointerException.java:33)