#127 consuming lot of CPU time in large projects

[Marc Pompl]

I am running p4eclipse for a large (contains over 4000
java files) project. p4eclipse tries to check for all
files the occurence in repository, leading to time outs
of about a minute. :(
Would be very nice and useable if at least the build
directory will not be checked. Additionally, a set of
directories should be configurable which will be
excluded from checking - such as jars_output or ant
generated output informations and so on.

Tasks:
- ignore the build directory (for each project defined
in the correspending project properties)
- ignore a given set of directories (has to be
configurable in the project properties)