[PATCH] Minor changes to INSTALL file

[Russell Yanofsky <re...@columbia.edu>]

Log Message:

Minor improvements to the INSTALL file in the sections about APR and
building on windows.

* INSTALL
  (I.1)
    put all information about building APR in-tree up top, instead of
    talking about it up top, then talking about linking external APRs,
    then talking about building in-tree again.

    merge and rework two paragraphs about linking with external apr
    that I thought were confusing

    add some information about how apr is built on Windows and an
    "On Unix systems," qualifier to some unix-specific instructions.

    remove statement about in-tree apr sources being ignored if
    apr-config is detected on the system. This doesn't appear to be
    true
  
  (II.E)
    add a few tidbits about Visual C++ .NET, and w32locatedb.pl, and
    Apache
    
    remove statement saying it's neccessary to copy apr sources into
    subversion tree. This isn't true anymore