substantial edit of install/uninstall functions
- better modularity (added webinstall_extras)
- less warnings about saving paths
- no toolbox checks
- better handling of no java (for octave)
- fixed many minor bugs
globalcmt_update fixed to handle no db
minor fix to mattaup/Contents.m file
startup.m renamed to startup_seizmo.m
- unfortunately this was causing several
  issues for uninstall & install making
  this move necessary
- now call startup_seizmo when you want
  to run seizmo functions without editing
  your path files
shutdown_seizmo added to compliment startup_seizmo
- this removes seizmo components from the
  dynamic path so you can work without seizmo
  in the current session if it is causing issues
- actually add shutdown_seizmo
- updated help files for new files
- updated many functions to make discrete time vectors properly
  - probably a bug or two made by making all these changes
- added misc/maketime which shows how to do this
- added misc/freqcount for occurance counting purposes
- fixed several bugs in install/uninstall scripts
- improved fk4d verbose output
- removed old example isc text file
- changed webinstall_* to avoid javaclasspath warnings
- cleared out a few more install/uninstall bugs
- also fixed extras zipfiles to have proper paths
added a couple bash scripts (not Octave/Matlab)
- setup_seizmo.bash downloads all extra content
  (current exception: the globalcmt catalog)
  and expands it -- for downloading extras outside
  matlab when it has internet issues (like I am
  experiencing)
- clean_seizmo.bash deletes all that extra stuff
  so you can go back to a vanilla state hopefully
  -- this is good for testing & probably updating
- added uninstall/clean_seizmo to help with updating
  external packages (by deleting everything)
- minor change to shutdown_seizmo to handle missing
  m_map (from clean_seizmo) and m_map_fixes still
  on the path