Rename reinterpret -> normalize for clarity.
Use EIO which is clearer than Hadoop's EINTERNAL.
Correct documentation.
Move environment handling to C.

o This eliminates the need for alternate bootstrap scripts for
  parrot_run and chirp_server.

o Loading the libjvm.so and libhdfs.so shared libraries is simplified
  by searching under JAVA_HOME/HADOOP_HOME for these filenames and
  attempting to load indescriminately. If there is an architecture
  incompatibility (x86-32 vs. x86-64) causing dlopen to error, then we
  keep looking.

o CLASSPATH is now populated with all .jar files.