[pitivi] Clarify a bit the comments

[Jean-François Fortin Tam <jfft src gnome org>]

commit a1e7a93fb0e9f5946c74260c1b48c9aefa77ec98
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Sun Mar 10 01:40:05 2013 +0100

    Clarify a bit the comments

 bin/pitivi-git-environment.sh |   34 ++++++++++++++++------------------
 1 files changed, 16 insertions(+), 18 deletions(-)
---
diff --git a/bin/pitivi-git-environment.sh b/bin/pitivi-git-environment.sh
index 682de1f..577e970 100755
--- a/bin/pitivi-git-environment.sh
+++ b/bin/pitivi-git-environment.sh
@@ -1,26 +1,25 @@
 #!/bin/bash -i
 # Indentation = 4 spaces.
 #
-# This script sets up the environment to use and develop pitivi with an
-# uninstalled git checkout of pitivi and GES.
+# This script sets up the environment to use and develop Pitivi.
 #
-# It will set up LD_LIBRARY_PATH, DYLD_LIBRARY_PATH, PKG_CONFIG_PATH,
-# to prefer the uninstalled versions but also contain the installed ones.
+# The git projects will be cloned in ~/pitivi-git, unless you specify
+# a different directory, for example:
+#     MYPITIVI=~/dev/pitivi pitivi-git-environment.sh
 #
-# You can change the MYPITIVI variable your preferred location, that either:
-#  + contains your own build of pitivi, ges, gst-python, etc.
-#
-#  + an empty location where you have R+W access, so that the script
-#    can set up everything for you (recommended).
-# Either set $MYPITIVI in your ~/.bashrc, or edit the line below:
+# LD_LIBRARY_PATH, DYLD_LIBRARY_PATH, PKG_CONFIG_PATH are set to
+# prefer the cloned git projects and to also allow using the installed ones.
+
 MYPITIVI=${MYPITIVI:-$HOME/pitivi-git}
-# Change this variable to 'master' if you prefer to work with the master branch
+
+# Change this variable to 'master' if you prefer to work with the master branch.
 # When using "master", this script will automatically "pull --rebase" modules.
-# This will fail and check master in the end
-# Using master until we depend on a released version
+# For now, we are using master until we depend on a released version.
 GST_RELEASE_TAG="master"
+
 # If you care about building the GStreamer/GES developer API documentation:
 BUILD_DOCS=false
+
 # Here are some dependencies for building GStreamer and GES. If they're missing,
 # we'll fetch the git repositories at the given version tag and compile.
 # If you set those variables to "master", it will grab the latest dev version
@@ -28,6 +27,7 @@ GLIB_RELEASE_TAG="2.34.2" # "gobject-introspection" needs glib > 2.32
 PYGOBJECT_RELEASE_TAG="3.8.0"
 GOBJECT_INTROSPECTION_RELEASE_TAG="GOBJECT_INTROSPECTION_1_34_2"
 
+
 #
 # Everything below this line shouldn't be edited!
 #
@@ -39,16 +39,14 @@ if pkg-config glib-2.0 --atleast-version=$GLIB_RELEASE_TAG; then
 else
     MODULES_CORE="glib gobject-introspection pygobject"
 fi
-# Do NOT use the following two variables directly, use $MODULES instead
-MODULES_ALL="gstreamer gst-plugins-base gst-plugins-good gst-plugins-ugly gst-plugins-bad gst-ffmpeg gnonlin 
gst-editing-services gst-python"
-MODULES_MINIMAL="gnonlin gst-editing-services gst-python"
+
 # The following decision has to be made before we've set any env variables,
 # otherwise the script will detect our "gst uninstalled" and think it's the
 # system-wide install.
 if pkg-config --exists --print-errors 'gstreamer-1.0 >= 1.1.0.1'; then
-    MODULES=$MODULES_MINIMAL
+    MODULES="gnonlin gst-editing-services gst-python"
 else
-    MODULES=$MODULES_ALL
+    MODULES="gstreamer gst-plugins-base gst-plugins-good gst-plugins-ugly gst-plugins-bad gst-ffmpeg gnonlin 
gst-editing-services gst-python"
 fi
 
 # base path under which dirs are installed