Changed the active,selectedactive and selectedinactive select bars to a semi transparent version.

modified:   base.xml
modified:   browser-ui.xml
modified:   config-ui.xml
modified:   controls-ui.xml
modified:   menu-ui-vert.xml
modified:   music-base.xml
modified:   music-ui.xml
modified:   mytharchive-ui.xml
modified:   mythburn-ui.xml
modified:   mythnative-ui.xml
modified:   netvision-ui.xml
modified:   news-ui.xml
modified:   recordings-ui.xml
modified:   settings-ui.xml
modified:   status-ui.xml
modified:   stream-ui.xml
modified:   weather-ui.xml
Assorted additions and typo fixes to the previous commit f3476d1613ff94b738fe97a7ce922895c45af711.

modified:   base.xml
modified:   config-ui.xml
modified:   recordings-ui.xml
modified:   stream-ui.xml
Another typo fix to the previous commit f3476d1613ff94b738fe97a7ce922895c45af711.
Added base.xml_solid_select_bar which will revert the look to the way it was before
the commit f3476d1613ff94b738fe97a7ce922895c45af711.

new file:   base.xml_solid_select_bar
modified:   menu-ui-vert.xml
Modified the base_button_list look to more closely match the new
semi transparent select bar used in base_list.

modified:   base.xml
modified:   osd.xml
modified:   recordings-ui.xml
modified:   schedule-ui.xml
modified:   video-ui.xml
Modified the schedulefiltereditor window to work with the new look that
was applied in commit 67e2a4987e0f44c5cea49cade4dc2884efafb631.

modified:   schedule-ui.xml
Tweaked the MythPopupBox window small and smallgrey font definitions
to provide a little more contrast.

modified:   osd.xml
Remove no longer used defintions.
<shape name="base_button_background_active_list_style"
and
<shape name="base_button_background_inactive_list_style"

modified:   base.xml
Removed no longer used definition.
<shape name="base_button_list_background_active" in base.xml.

Added osd.xml_solid_select_bar for people who want the old select bar look.

Tweaked the arrows position of the MythDialogBox window in base.xml.
Tweaked the MythPopupBox arrows backdrop position and size to
overcome scaling problems.

modified:   osd.xml
Added new alternative osd.xml(osd.xml.alt).

modified:   osd.xml.alt
Bumped version to 4.50.

modified:   readme.txt
modified:   themeinfo.xml